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Seamless steel pipe

Seamless steel pipes are produced using an extrusion mold. Welded steel pipes are produced by rolling a sheet of steel into a tube and welding the seam. Seamless steel pipes are less expensive. The third method is casting. Molten steel is poured into a casting mold.

Please check more in-formations about seamless pipes and tubes as below:

Seamless Steel pipes by application

Steel pipe are ubiquitous and can be found underground and within residential walls, laboratories, and commercial and industrial structures. Seamless steel pipe transport fluids including water, natural gas, waste and air. Three manufacturing methods exist to produce steel pipes.

ASTM Seamless pipes

The ASTM/ASME seamless steel pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers' trust and consistently favorable comments.

DIN Seamless steel pipe

DIN/EN seamless pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers’ trust and consistently favorable comments.

JIS Seamless pipes

JIS seamless pipe is steel pipe that has been created by JIS and meets certain performance requirements. Manufacturers follow Japan Industrial Standards voluntarily.

Leading Big O.D. Steel seamless pipes supplier in Asia

Big OD seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Big OD seamless pipes dominates 65% of market share in Chinese boiler industry.

API pipes & tubes

The American Petroleum Institute has several standard specifications for pipe. They set forth dimensions, materials, quality control during manufacture, minimum physical properties such as yield strength, etc.

How to packing the seamless pipe

There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.

We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanical, construction, chain, electric of the company is 80000t.

Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

BS 3059 II 440 boiler tube

BS 3059 II 440 boiler tube, seamless tube

boiler tube, boiler tubes, BS3059, BS3059-II 440, seamless steel pipe, Seamless tube, steel tube

BS 3059 II 440 requirements specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties.
The method of manufacturing boiler tube is the same with seamless steel pipe,but this pipe has a requirement of the steel grades. Depending on the operating temperature, it can be divided into two kinds: general boiler pipes and high-pressure boiler tubes.
A general boiler pipe is able to work below the temperature 450°C.It’s made of hot finished or cold rolled carbon steel pipes. While high-pressure boiler tube is used to produce high-pressure or ultrahigh pressure super heater tube,reheater tube,gas-guide tube,main steam pipe and so on. Our product BS3059-II 440 belongs to this boiler tube.

Size range of BS3059-II 440 boiler tube

Out diameter:19.05-114.3mm
Wall thickness:2-14mm
Max length:16m

Keywords

BS3059-II 440,BS 3059 Part II Gr.440, Boiler Steel Tube, Boiler tube, seamless steel tubes BS3059

Delivery Condition:

Heat treatment,Annealed, Normalized, Normalized and Tempered

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

Application:

For tubular heat exchangers,condensers and similar heat transfer apparatus.

Chemical Composition of BS3059-II 440 boiler tube seamless tube:

Standard	C	Mn	P	S	Si
BS3059-II 440	0.12-0.18	0.90-1.20	≤0.035	≤0.035	0.10-0.35

DIN 2448 seamless steel pipes

DIN 2448, seamless steel pipe, seamless steel pipes, St 37.0, Steel pipe

DIN 2448 Seamless Steel Pipes and Tubes-Dimensions, Conventional Masses per Unit Lengthstandard reference.

Standard:

DIN 1629
DIN 17175

Material

St 37.0
St35.8I

Schedule: Sch10,sch20, Sch40, Std, Sch80, Xs

Length: 5.8 Meters For 20ft Container, 6-12 Meters For 40ft Container

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test
Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test
Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Packing:

Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Delivery:

Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
Weight of bundle-up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.

Seamless steel pipes for project service

Seamless steel pipe for low and medium pressure

API 5L, ASTM A53, seamless steel pipe, seamless steel pipes, Steel pipe

Sunny Steel offer the seamless steel pipes used for project service include coneying water, pertroleum, gas and other common fluides.

Seamless steel pipe are ubiquitous and can be found underground and within residential walls, laboratories, and commercial and industrial structures. Seamless steel pipe transport fluids including water, natural gas, waste and air. Three manufacturing methods exist to produce steel pipes. Seamless steel pipes are produced using an extrusion mold.

Steel pipes Size (mm):

Outer Dimensions.: 10.3mm-114.3mm
Wall Thickness: 0.8 mm-12 mm
Length: max 16000mm

Application: apply to coneying water, pertroleum, gas and other common fluides.

Steel grade:

ASTM A106 Grade A, Grade B, Grade C
ASTM A53
API 5L Gr.B
Mill test certificates will be issued according to EN10204/3.1B

Well packing:

Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Seamless steel pipe for low and medium pressure

astm a179, ASTM A192, GB3087, pipeline, seamless steel pipe, seamless steel pipes

Sunny Steel offer an extensive range of Seamless steel pipes for for low and medium pressure boiler water wall, economizer, reheater, superheater and steam pipeline.

Steel pipes Size (mm):

Outer Dimensions.: 10.3mm-114.3mm
Wall Thickness: 0.8 mm-12 mm
Length: max 16000mm

Application:

for low and medium pressure boiler water wall
economizer, reheater, superheater and steam pipeline.

Steel grade:

ASTM A179, ASTM A192
Mill test certificates will be issued according to EN10204/3.1B

Well packing:

Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Chemical Compositions(%)

Steel grade	C	Si	Mn	P	S	Cr	Mo	Cu	Ni	V
ASTM A179	0.06-0.18	/	0.27-0.63	≤0.035	≤0.035	/	/	/	/	/
ASTM A192	0.06-0.18	≤0.25	0.27-0.63	≤0.035	≤0.035	/	/	/	/	/

Mechanical Properties

Steel grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)	Hardness
Steel grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)	<5 td>	<=5.1
ASTM A179	≥180	≥325	≥35	/	/
ASTM A192	≥180	≥325	≥35	77HRB	137HB

ASTM A53 Pipe,ASME SA53 Pipe

ASTM A53, carbon steel pipe, Seamless pipe, seamless steel pipe, Steel pipe

ASTM A53 Standard specification covers Seamless and Welded, Black and Hot-Dipped Galvanized nominal (average) wall pipe for coiling, bending, flanging and other special purposes and is suitable for welding.

The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric furnace, or basic-oxygen. The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding.

A53 pipe comes in three types and two grades

A53 Type F, which is longitudinally furnace butt welded or continuous welded (Grade A only)
A53 Type E, which is longitudinally electric resistance welded (Grades A and B)
A53 Type S, which is seamless pipe, produced by hot working, and possibly cold finishing, the steel (Grades A and B). ASTM A53, Type S is now currently an outdated specification and has been replaced by ASTM A106 specification for seamless carbon steel pipe.

This is a standard set by the standards organization ASTM International, a voluntary standards development organizations that sets technical standards for materials, products, systems, and services.

This specification covers Seamless and Welded, Black and Hot-Dipped Galvanized nominal (average) wall pipe for coiling, bending, flanging and other special purposes and is suitable for welding. Continuous-Welded pipe is not intended for flanging. Purpose for which pipe is intended should be stated on order. It shall be permissible to furnish pipe having other dimensions provided that such pipe complies with all other requirements of this specification. Supplementary requirements of an optional nature are provided and shall apply only when specified by the purchaser.

Note 1. The dimensionless designators NPS (nominal pipe size) [DN (diameter nominal)] have been substituted in this specification for such traditional terms as ‘nominal diameter,’ ‘size,’ and ‘nominal size.’

Note 2. The term nominal wall thickness has been assigned for the purpose of convenient designation, existing in name only, and is used to distinguish it from the actual wall thickness, which may vary over or under the nominal wall thickness.

Permissible Variations in Wall Thickness

The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.

Permissible Variations in Weights per Foot

Weight of any length shall not vary more than 10% over and 3.5% under that specified.

NOTE-NPS 4 and smaller-weighed in lots. Larger sizes shall be weighed separately by length.

Chemical Requirements ASTM A53

Chemical elements	Type S		Type E		Type F
	(SMLS)		(ERW)		(FW)
	Gr. A	Gr.B	Gr. A	Gr. B	Gr. A
Carbon max. %	0.25	0.3	0.25	0.3	0.3
Manganese %	0.95	1.2	0.95	1.2	1.2
P, max. %	0.05	0.05	0.05	0.05	0.05
Sulfur, max. %	0.045	0.045	0.045	0.045	0.045
Copper, max.%	0.4	0.4	0.4	0.4	0.4
Nickel, max. %	0.4	0.4	0.4	0.4	0.4
Chromium, max. %	0.4	0.4	0.4	0.4	0.4
Mo, max. %	0.15	0.15	0.15	0.15	0.15
Vanadium, max. %	0.08	0.08	0.08	0.08	0.08

The total composition for these five elements shall not exceed 1.00%.

Tensile Requirements

Properties	SMLS & ERW		Con. welded
Properties	Grade A	Grade B	Grade
Tensile Strength, min., psi	48,000	60,000	45,000
Yield Strength, min., psi	30,000	35,000	25,000

Seamless and Electric-Resistance-Welded — Bending, flattening, tensile on one length of pipe from each lot of 500 lengths or less of a size.
Continuous-Weld — Bending, flattening, tensile
Con. welded: Continuous-welded

General Information

Couplings — Applied handling tight. Couplings, 2″ and smaller straight tapped, other sizes taper tapped.
Thread Protection — Applied to pipe 4″ and larger.
End Finish (unless otherwise specified) –
STD or XS, or wall thicknesses less than 0.500 in. (excluding XXS): Plain and beveled
All XXS and wall thicknesses over 0.500 in.: Plain end square cut.

Hydrostatic testing

Hydrostatic inspection test pressures for plain end and threaded and coupled pipe are specified. Hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and electric-resistance-weld pipe.

Mechanical tests specified

Tensile Test — Transverse required on ERW for NPS 8 and large.
Sending Test (Cold) — STD and XS-NPS 2 and under XXS-NPS 1 1/4 and under.

Application	Degree of Bend	Diameter of Mandrel
For Normal A53 Uses	90	12 x nom dia. of pipe
For Close Coiling	180	8 x nom dia. of pipe

Flattening Test — NPS 2 and larger STD and XS. (Not required for XXS pipe.)

ASTM A335 P92 Alloy Seamless Steel Pipe

Alloy Seamless Steel Pipe, Alloy steel pipe, ASTM A335, ASTM A335 P92, p92, seamless steel pipe

ASTM A335 P92 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. The steel material shall conform to chemical composition, tensile property, and hardness requirements.
Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices. The range of ASTM A335 P92 seamless alloy steel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.
The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Chemical Requirements of ASTM A335 P92

UNS Designation	K92460
Carbon	0.07–0.13
Manganese	0.30–0.60
Phosphorus(max)	0.02
Sulfur(max)	0.01
Silicon	0.50 max
Chromium	8.50–9.50
Molybdenum	0.30–0.60
V	0.15-0.25
N	0.03-0.07
Ni (max)	0.4
Al(max)	0.02
Cb	0.04-0.09
W	1.5-2.00
B	0.001-0.006
Ti (max)	0.01
Zr(max)	0.01

Mechanical Properties of ASTM A335 P92

Tensile strength, min, (MPa)	620
Yield strength, min, (MPa)	440
Elongation, min, (%), L/T	20/…

Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment

A / N+T
N+T / Q+T
N+T

Mechanical Tests Specified of ASTM A335 P92

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Permitted tolerance for OD

OD	Plus tolerance(+)	Minus tolerance (-)
10.29—48.3	0.4	0.4
<48.3—-≤114.3	0.79	0.79
<114.3—≤219.1	1.59	0.79
<219.1—≤323.9	2.38	0.79
<323.9	±1%

Wall thickness is average wall or according to ASME SA530.

Notes for Bend Test:

For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

ASTM A335 P91 Alloy Seamless Steel Pipe

ASTM A335, ASTM A335 p91, ASTM A335 P91 Alloy Seamless Steel Pipe, seamless steel pipe, Steel pipe

ASTM A335 P91 pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.
The steel material shall conform to chemical composition, tensile property, and hardness requirements.
Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.
The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Chemical Requirements of ASTM A335 P91

UNS Designa-tion	K91560
Carbon	0.08-0.12
Manganese	0.30-0.60
P&S	0.020-0.010
Silicon	0.20-0.50
Chromium	8.00-9.50
Molybdenum	0.85-1.05
Others	—

Mechanical Properties of ASTM A335 P91

Properties	Data
Tensile strength, min, (MPa)	585
Yield strength, min, (MPa)	415
Elongation, min, (%), L/T	20/…

Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment

A / N+T
N+T / Q+T
N+T

Mechanical Tests Specified of ASTM A335 P91

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Notes for Bend Test:

For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

Permitted tolerance for OD

OD	Plus tolerance(+)	Minus tolerance (-)
10.29—48.3	0.4	0.4
<48.3—-≤114.3	0.79	0.79
<114.3—≤219.1	1.59	0.79
<219.1—≤323.9	2.38	0.79
<323.9	±1%

Wall thickness is average wall or according to ASME SA530.

ASTM A333 Grade 8 Seamless Pipes

ASME SA333 Gr.8 Seamless Steel Pipe

alloy steel, ASME SA333 Gr.8, astm a333, ASTM A333 Gr.8, ASTM A333 Grade 8, gr 8, seamless steel pipe

ASTM A333 Standard covers seamless and welded steel pipe for low temperature service. The Grade 8 steel involved is similar to AISI 4032 low alloy steel. ASTM A333 Grade 8 pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.

Seamless and Welded Steel Pipe size for Low-Temperature Service:

Outer Dimensions: 19.05mm-114.3mm
Wall Thickness:2.0mm-14 mm
Length: max 16000mm

Application: Seamless and Welded Steel Pipe for Low-Temperature Service.
Steel grade: ASTM A333 Grade 8

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test
Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test
Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Crade	The lowest temperature for strike test
Crade	℉	℃
ASTM A333 Grade 8	-320	-195

ASTM A333 Gr. 8 Chemical Compositions(%)

Grade	Chemical Composition (%)
Grade	C(max)	Si	Mn	P(max)	S(max)	Cr	Ni
Grade 8	0.13	0.13-0.32	0.9	0.025	0.025	--	8.40-9.60

ASTM A333 Gr.7 Mechanical Properties

Grade	Tensile Strength (MPa）	Yield Point (MPa)	Elongation (%)
			Y	X
ASTM A333 Grade 8	≥690	≥515	≥22	--

Impact temperature

Minimum Impact Test Temperature -45 C(-50 F)

Impact requirements

Size	Minimum Average Notched Bar Impact Value of Each Set of Three Specimens		Minimum Notched Bar Impact Value of One Specimen Only of a Set
Size of Specimen, mm	ft-lbf	J	ft-lbf	J
10 by 10	13	18	10	14
10 by 7.5	10	14	8	11
10 by 6.67	9	12	7	9
10 by 5	7	9	5	7
10 by 3.33	5	7	3	4
10 by 2.5	4	5	3	4

Straight line interpolation for intermediate values is permitted.

Impact temperature reduction

Specimen Width Along Notch or Actual Material Thickness mm	Temperature Reduction,Degrees Colder C
10 (standard size)	0
9	0
8	0
7.5 (3/4 standard size)	3
7	4
6.67 (2/3 standard size)	5
6	8
5 (1/2 standard size)	11
4	17
3.33 (1/3 standard size)	19
3	22
2.5 (1/4 standard size)	28

P Number/ Group Number

ASTM A333	Grade 6
P Number	1
Group	1

Machinability

Machinability is good, similar to law alloy 4032 steel.

Forming

The product comes in piping form but may be formed readily by conventional methods.

Welding

Weldable by conventional methods.

Heat Treatment

Product is supplied in the normalized, 1500 f and air cooled, condition. It may be quenched and tempered by heating to 1475 F, quench in circulating water and then temper by re-heating to 1100 F and rapid air cooling.

Forging

Product is supplied in pipe form and not normally forged from that shape.

Hot Working

Hot working may be done qt 2000 F down to 1600 F if need be. Do not hot work below 1550 F and immediately following hot working cool in a controlled atmosphere furnace from a temperature above 1550 F.

Cold Working

Cold working may be done by conventional methods.

Annealing

Anneal, or normalize, at 1600 F and air cool.

Strike Temperature Condition

Grade	The lowest temperature for strike test
Grade	℉	℃
ASTM A333 Gr.6	-150	-100

Packing:

Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Delivery:

Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
Weight of bundle – up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.

Get in Touch

Welcome to Sunny Steel Enterprise Ltd.

Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.
You can get in touch by telephone, post, online or E-mail.
Please check the help section first to see if your question may be answered there.

Address: Siping Road, Shanghai,200081, China
Telephone:+8621 3378 0199 Sum Xu
Fax number: :+8621 6185 1035
E-mail: sales@sunnysteel.com | sunnysteel@163.com

Pages

Seamless Steel pipes by application

ASTM Seamless pipes

JIS Seamless pipes

Size range of BS3059-II 440 boiler tube

Keywords

Delivery Condition:

Surface treatment:

Application:

Chemical Composition of BS3059-II 440 boiler tube seamless tube:

Steel pipes Size (mm):

Steel grade:

Well packing:

Chemical Compositions(%)

Mechanical Properties

Permissible Variations in Wall Thickness

Permissible Variations in Weights per Foot

Chemical Requirements ASTM A53

Tensile Requirements

General Information

Hydrostatic testing

Mechanical tests specified

Material & Manufacture

Heat Treatment

Mechanical Tests Specified of ASTM A335 P91

Notes for Bend Test:

Impact requirements

Impact temperature reduction

P Number/ Group Number

Get in Touch

Welcome to Sunny Steel Enterprise Ltd.

Why Sunny Steel?

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Seamless pipe/tubes

ASTM A335 pipes/tubes