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SSAW Pipe,Spirally Submerged Arc Welding Pipe, Sprial Steel Pipe,carbon steel pipe,Welded Steel Pipe

About Us

We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings  from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.

Products

Workshop

High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.

Projects

Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
The many years of experience that we have means that there is always someone who has the ability to carry a project forward.

Services

Super Steel Manufacturing Co.,Ltd(SMC) adheres to the principle of being customer-oriented, focusing on customers and meeting their requirements. We respond quickly and customize products and solutions for end users.

News

Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.

Welded Steel Pipe

SSAW Pipe,Spirally Submerged Arc Welding Pipe, Sprial Steel Pipe,carbon steel pipe,Welded Steel Pipe
SSAW Pipe,Spirally Submerged Arc Welding Pipe, Sprial Steel Pipe,carbon steel pipe,Welded Steel Pipe

SSAW Steel Pipe

Pipe Type:SSAW steel Pipe,Spirally Submerged Arc Welding Pipe ,SAWH Pipe, Sprial Steel Pipe,Piling Structure SSAW Pipe

Specification: 

Outer diameter:219mm-4064mm

Wall thickness: 3.2mm-40mm

LENGTH:5.8/6/11.8/12/18/32meters

Standard & Grade:ASTM A53: Gr.A, Gr.B;API 5L:Gr.A,Gr.B,X42,X46, X52,X56,X60,X65 PSL1 and PSL2; ASTM A252, ASTM A500, JIS G3466, AN/NZS 1163, AN NZS1074, EN10219, EN10217 and etc.

End:Square Ends/Plain Ends (straight cut, saw cut, torch cut),Beveled/Threaded Ends

Surface:Black Painting/Oil Painting/Anti-Rust oil/Anti-Corrosive Coating

Application: Oil and gas pipeline, water transmission, liquid transportation, Building construction, Steel structure construction,  Offshore/Onshore construction, Piling works, Electricity, Heating power and etc

Inquiry
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  • SSAW Pipe,Spirally Submerged Arc Welding Pipe, Sprial Steel Pipe,carbon steel pipe,Welded Steel Pipe
  • SSAW Pipe,Spirally Submerged Arc Welding Pipe, Sprial Steel Pipe,carbon steel pipe,Welded Steel Pipe
  • SSAW Pipe,Spirally Submerged Arc Welding Pipe, Sprial Steel Pipe,carbon steel pipe,Welded Steel Pipe
  • SSAW Pipe,Spirally Submerged Arc Welding Pipe, Sprial Steel Pipe,carbon steel pipe,Welded Steel Pipe
  • Description
  • Specification
  • Standard
  • Process
  • Packing

Description


Pipe Type:SSAW Pipe,Spirally Submerged Arc Welding Pipe ,SAWH Pipe, Sprial Steel Pipe,Piling Structure SSAW Pipe

Specification: Outer diameter:219mm-4064mm 

                            Wall thickness: 3.2mm-40mm 

                            LENGTH:5.8/6/11.8/12/18/32meters 

Standard & Grade:ASTM A53: Gr.A, Gr.B;API 5L:Gr.A,Gr.B,X42,X46, X52,X56,X60,X65 PSL1 and PSL2; ASTM A252, ASTM A500, JIS G3466, AN/NZS 1163, AN NZS1074, EN10219, EN10217 and etc. 

End:Square Ends/Plain Ends (straight cut, saw cut, torch cut),Beveled/Threaded Ends 

Surface:Black Painting/Oil Painting/Anti-Rust oil/Anti-Corrosive Coating 

Application: Oil and gas pipeline, water transmission, liquid transportation, Building construction, Steel structure construction,  Offshore/Onshore construction, Piling works, Electricity, Heating power and etc

Usage: Used for Oil and gas pipeline, water transmission, liquid transportation, Building construction, Steel structure construction,  Offshore/Onshore construction, Piling works, Electricity, Heating power and etc

Test:Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.

Process:

SSAW: Spiral Submerged-arc Welded


Quality Standard:

IS: 3589 Steel tubes for water and sewage

IS : 1978-1982:Steel tubes for use in transportation of oil; gas & Petroleum products

ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

DIN 2458 WELDED STEEL PIPES AND TUBES

EN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties


API 5L Line Pipe

SY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low pressure field fluid service

SY/T 5040 Spiral submerged arc-welded steel pipe piles

CJ/T 3022 Spiral submerged-arc welded steel pipe for municipal heat supply

IS : 1978 Steel tubes for use in transportation of oil; gas & Petroleum products

ASTM A252 WELDED AND SEAMLESS STEEL PIPE PILES


Coating Standard:

ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water

ISO 21809 Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems

DIN 30670 Polyethylen coatings of steel pipes and fittings


Steel Grade:

EN: S235JR,S235J0, S235J2, S275JR,S275J0, S355JR, S355J0,S355J2H,S460,S690,

DIN: St12, St13, St14, St33, St37, St44, ST52

ASTM A 53: Gr. A, Gr B, Gr C, Gr.D

API 5L: A, B, X42, X46, X52, X56, X60, X65 X70

GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555



Specification

Specification



Out Diameter

Wall Thickness (mm)

mm

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

219.1

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

273

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

323.9

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

325

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

355.6

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

377

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

406.4

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

426

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

457

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

478

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

508

.

.

.

.

.

.

.

 

.

 

 

 

 

 

 

 

 

 

 

 

529

.

.

.

.

.

.

.

 

.

 

 

 

 

 

 

 

 

 

 

 

630

.

.

.

.

.

.

.

 

.

.

 

 

 

 

 

 

 

 

 

 

711

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

720

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

813

 

.

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

820

 

.

.

.

 

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

920

 

 

.

.

 

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

1020

 

 

.

.

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

1220

 

 

.

.

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

1420

 

 

 

.

.

.

.

.

.

.

 

.

.

.

.

 

 

 

 

 

1620

 

 

 

 

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

1820

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

2020

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

 

 

 

 

 

2220

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

 

 

 

 

 

2500

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.

.

.

.

2540

 

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.

.

.

3500

 

 

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.



Standard

Chemical Analysis and Mechanical Properties of SSAW Steel Pipe

Standard Grade Chemical Composition(max)% Mechanical Properties(min)
C Si Mn P S Tensile Strength(Mpa) Yield Strength(Mpa)
API 5L PSL1 A 0.22 - 0.90 0.030 0.030 335 335
B 0.26 - 1.20 0.030 0.030 415 415
X42 0.26 - 1.30 0.030 0.030 415 415
X46 0.26 - 1.40 0.030 0.030 435 435
X52 0.26 - 1.40 0.030 0.030 460 460
X56 0.26 - 1.40 0.030 0.030 490 490
X60 0.26 - 1.40 0.030 0.030 520 520
X65 0.26 - 1.45 0.030 0.030 535 535
X70 0.26 - 1.65 0.030 0.030 570 570
API 5L PSL2 B 0.22 0.45 1.20 0.025 0.015 415 415
X42 0.22 0.45 1.30 0.025 0.015 415 415
X46 0.22 0.45 1.40 0.025 0.015 435 435
X52 0.22 0.45 1.40 0.025 0.015 460 460
X56 0.22 0.45 1.40 0.025 0.015 490 490
X60 0.12 0.45 1.60 0.025 0.015 520 520
X65 0.12 0.45 1.60 0.025 0.015 535 535
X70 0.12 0.45 1.70 0.025 0.015 570 570
X80 0.12 0.45 1.85 0.025 0.015 625 625
ASTM A53 A 0.25 0.10 0.95 0.050 0.045 330 330
B 0.30 0.10 1.20 0.050 0.045 415 415
ASTM A252 1 - - - 0.050 - 345 345
2 - - - 0.050 - 414 414
3 - - - 0.050 - 455 455
EN10217-1 P195TR1 0.13 0.35 0.70 0.025 0.020 320 320
P195TR2 0.13 0.35 0.70 0.025 0.020 320 320
P235TR1 0.16 0.35 1.20 0.025 0.020 360 360
P235TR2 0.16 0.35 1.20 0.025 0.020 360 360
P265TR1 0.20 0.40 1.40 0.025 0.020 410 410
P265TR2 0.20 0.40 1.40 0.025 0.020 410 410
EN10217-2 P195GH 0.13 0.35 0.70 0.025 0.020 320 320
P235GH 0.16 0.35 1.20 0.025 0.020 360 360
P265GH 0.20 0.40 1.40 0.025 0.020 410 410
EN10217-5 P235GH 0.16 0.35 1.20 0.025 0.020 360 360
P265GH 0.20 0.40 1.40 0.025 0.020 410 410
EN10219-1 S235JRH 0.17 - 1.40 0.040 0.040 360 360
S275JOH 0.20 - 1.50 0.035 0.035 410 410
S275J2H 0.20 - 1.50 0.030 0.030 410 410
S355JOH 0.22 0.55 1.60 0.035 0.035 470 470
S355J2H 0.22 0.55 1.60 0.030 0.030 470 470
S355K2H 0.22 0.55 1.60 0.030 0.030 470 470

Standard and Classfication 

Classfication Standard Main Products
Steel Pipe for Fluid Service GB/T 14291 Welded pipe for mine fluid sevice
GB/T 3091 Welded pipe for low pressure fluid service
SY/T 5037 Spirally submerged arc welded steel pipe for pipelines for low pressure fluid service
ASTM A53 Black and hot-hipped galvanized welded and seamless steel pipe
BS EN10217-2 Welded steel tybes for pressure purposes – delivery technical conditions – part2: Electric welded non- alloy and alloy steel tubes with specified elevated temperature properties
BS EN10217-5 Welded steel tybes for pressure purposes – delivery technical conditions – part5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties
Steel Pipe for Ordinary Structure GB/T 13793 Longitudinally electric resistance welded steel pipe
SY/T 5040 Spirally submerged arc welded steel pipe piles
ASTM A252 Welded and seamless steel pipe piles
BS EN10219-1 Cold formed welded structural hollow sections of non-alloy and fine grain steels – part1: Technical delivert conditions
BS EN10219-2 Cold formed welded structural hollow sections of non-alloy and fine grain steels – part2: tolerances dimmsions and sectional properties
Line Pipe GB/T 9711.1 Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
GB/T 9711.2 Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B steel pipe)
API 5L PSL1/2 Line pipe
Casing API 5CT Steel pipe for use as casing or tubing for wells of petroleum and natural gas industries

Tolerance of Outside Diameter and Wall Thickness of SSAW Steel Pipe

Standard Tolerance of Pipe Body Tolerance of Pipe End Tolerance of Wall Thickness
Out Diameter Tolerance Out Diameter Tolerance
GB/T3091 OD≤48.3mm ≤±0.5 OD≤48.3mm – ≤±10%
48.3 ≤219mm ≤±1.0% 48.3
≤273.1mm 		–
219 ≤508mm ≤±0.75% 219
≤508mm 		-0.8～+2.4
OD>508mm ≤±1.0% OD>508mm -0.8～+3.2
GB/T9711.1 OD≤48.3mm -0.79～+0.41 – – OD≤73 -12.5%～+20%
60.3 ≤457mm ≤±0.75% OD≤219mm -0.4～+1.59 88.9≤OD≤457 -12.5%～+15%
508 ≤941mm ≤±1.0% OD≥323.9 -0.79～+2.38 OD≥508 -10.0%～+17.5%
OD>941mm ≤±1.0% – – – –
GB/T9711.2 60 ≤610mm ±0.75%D～±3mm 60 ≤610mm ±0.5%D～±1.6mm 4mm ±12.5%T～±15.0%T
610 ≤1430mm ±0.5%D～±4mm 610 ≤1430mm ±0.5%D～±1.6mm WT≥25mm -3.00mm～+3.75mm
OD>1430mm – OD>1430mm – – -10.0%～+17.5%
SY/T5037 OD<508mm ≤±0.75% OD<508mm ≤±0.75% OD<508mm ≤±12.5%
OD≥508mm ≤±1.00% OD≥508mm ≤±0.50% OD≥508mm ≤±10.0%
API 5L PSL1/PSL2 OD<60.3 -0.8mm～+0.4mm OD≤168.3 -0.4mm～+1.6mm WT≤5.0 ≤±0.5
60.3≤OD≤168.3 ≤±0.75% 168.3 ≤610 ≤±1.6mm 5.0 ≤±0.1T
168.3 ≤610 ≤±0.75% 610 ≤1422 ≤±1.6mm T≥15.0 ≤±1.5
610 ≤1422 ≤±4.0mm OD>1422 – – –
OD>1422 – – – – –
API 5CT OD<114.3 ≤±0.79mm OD<114.3 ≤±0.79mm ≤-12.5%
OD≥114.3 -0.5%～1.0% OD≥114.3 -0.5%～1.0% ≤-12.5%
ASTM A53 ≤±1.0% ≤±1.0% ≤-12.5%
ASTM A252 ≤±1.0% ≤±1.0% ≤-12.5%

Process

Packing


according to the regulations and customer’s requests. great care is taken to avoid any damage which might be caused during storage or transportation. in addition, clear labels are tagged on the outside of the packages for easy identification of the product i. d. and quality information.



Specification

Specification



Out Diameter

Wall Thickness (mm)

mm

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

219.1

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

273

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

323.9

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

325

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

355.6

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

377

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

406.4

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

426

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

457

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

478

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

508

.

.

.

.

.

.

.

 

.

 

 

 

 

 

 

 

 

 

 

 

529

.

.

.

.

.

.

.

 

.

 

 

 

 

 

 

 

 

 

 

 

630

.

.

.

.

.

.

.

 

.

.

 

 

 

 

 

 

 

 

 

 

711

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

720

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

 

 

813

 

.

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

820

 

.

.

.

 

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

920

 

 

.

.

 

.

.

.

.

.

.

.

.

 

 

 

 

 

 

 

1020

 

 

.

.

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

1220

 

 

.

.

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

1420

 

 

 

.

.

.

.

.

.

.

 

.

.

.

.

 

 

 

 

 

1620

 

 

 

 

.

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

1820

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.

 

 

 

 

 

2020

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

 

 

 

 

 

2220

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

 

 

 

 

 

2500

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.

.

.

.

2540

 

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.

.

.

3500

 

 

 

 

 

 

 

 

 

.

.

.

.

.

.

.

.

.

.



Standard

Chemical Analysis and Mechanical Properties of SSAW Steel Pipe

Standard Grade Chemical Composition(max)% Mechanical Properties(min)
C Si Mn P S Tensile Strength(Mpa) Yield Strength(Mpa)
API 5L PSL1 A 0.22 - 0.90 0.030 0.030 335 335
B 0.26 - 1.20 0.030 0.030 415 415
X42 0.26 - 1.30 0.030 0.030 415 415
X46 0.26 - 1.40 0.030 0.030 435 435
X52 0.26 - 1.40 0.030 0.030 460 460
X56 0.26 - 1.40 0.030 0.030 490 490
X60 0.26 - 1.40 0.030 0.030 520 520
X65 0.26 - 1.45 0.030 0.030 535 535
X70 0.26 - 1.65 0.030 0.030 570 570
API 5L PSL2 B 0.22 0.45 1.20 0.025 0.015 415 415
X42 0.22 0.45 1.30 0.025 0.015 415 415
X46 0.22 0.45 1.40 0.025 0.015 435 435
X52 0.22 0.45 1.40 0.025 0.015 460 460
X56 0.22 0.45 1.40 0.025 0.015 490 490
X60 0.12 0.45 1.60 0.025 0.015 520 520
X65 0.12 0.45 1.60 0.025 0.015 535 535
X70 0.12 0.45 1.70 0.025 0.015 570 570
X80 0.12 0.45 1.85 0.025 0.015 625 625
ASTM A53 A 0.25 0.10 0.95 0.050 0.045 330 330
B 0.30 0.10 1.20 0.050 0.045 415 415
ASTM A252 1 - - - 0.050 - 345 345
2 - - - 0.050 - 414 414
3 - - - 0.050 - 455 455
EN10217-1 P195TR1 0.13 0.35 0.70 0.025 0.020 320 320
P195TR2 0.13 0.35 0.70 0.025 0.020 320 320
P235TR1 0.16 0.35 1.20 0.025 0.020 360 360
P235TR2 0.16 0.35 1.20 0.025 0.020 360 360
P265TR1 0.20 0.40 1.40 0.025 0.020 410 410
P265TR2 0.20 0.40 1.40 0.025 0.020 410 410
EN10217-2 P195GH 0.13 0.35 0.70 0.025 0.020 320 320
P235GH 0.16 0.35 1.20 0.025 0.020 360 360
P265GH 0.20 0.40 1.40 0.025 0.020 410 410
EN10217-5 P235GH 0.16 0.35 1.20 0.025 0.020 360 360
P265GH 0.20 0.40 1.40 0.025 0.020 410 410
EN10219-1 S235JRH 0.17 - 1.40 0.040 0.040 360 360
S275JOH 0.20 - 1.50 0.035 0.035 410 410
S275J2H 0.20 - 1.50 0.030 0.030 410 410
S355JOH 0.22 0.55 1.60 0.035 0.035 470 470
S355J2H 0.22 0.55 1.60 0.030 0.030 470 470
S355K2H 0.22 0.55 1.60 0.030 0.030 470 470

Standard and Classfication 

Classfication Standard Main Products
Steel Pipe for Fluid Service GB/T 14291 Welded pipe for mine fluid sevice
GB/T 3091 Welded pipe for low pressure fluid service
SY/T 5037 Spirally submerged arc welded steel pipe for pipelines for low pressure fluid service
ASTM A53 Black and hot-hipped galvanized welded and seamless steel pipe
BS EN10217-2 Welded steel tybes for pressure purposes – delivery technical conditions – part2: Electric welded non- alloy and alloy steel tubes with specified elevated temperature properties
BS EN10217-5 Welded steel tybes for pressure purposes – delivery technical conditions – part5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties
Steel Pipe for Ordinary Structure GB/T 13793 Longitudinally electric resistance welded steel pipe
SY/T 5040 Spirally submerged arc welded steel pipe piles
ASTM A252 Welded and seamless steel pipe piles
BS EN10219-1 Cold formed welded structural hollow sections of non-alloy and fine grain steels – part1: Technical delivert conditions
BS EN10219-2 Cold formed welded structural hollow sections of non-alloy and fine grain steels – part2: tolerances dimmsions and sectional properties
Line Pipe GB/T 9711.1 Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
GB/T 9711.2 Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B steel pipe)
API 5L PSL1/2 Line pipe
Casing API 5CT Steel pipe for use as casing or tubing for wells of petroleum and natural gas industries

Tolerance of Outside Diameter and Wall Thickness of SSAW Steel Pipe

Standard Tolerance of Pipe Body Tolerance of Pipe End Tolerance of Wall Thickness
Out Diameter Tolerance Out Diameter Tolerance
GB/T3091 OD≤48.3mm ≤±0.5 OD≤48.3mm – ≤±10%
48.3 ≤219mm ≤±1.0% 48.3
≤273.1mm 		–
219 ≤508mm ≤±0.75% 219
≤508mm 		-0.8～+2.4
OD>508mm ≤±1.0% OD>508mm -0.8～+3.2
GB/T9711.1 OD≤48.3mm -0.79～+0.41 – – OD≤73 -12.5%～+20%
60.3 ≤457mm ≤±0.75% OD≤219mm -0.4～+1.59 88.9≤OD≤457 -12.5%～+15%
508 ≤941mm ≤±1.0% OD≥323.9 -0.79～+2.38 OD≥508 -10.0%～+17.5%
OD>941mm ≤±1.0% – – – –
GB/T9711.2 60 ≤610mm ±0.75%D～±3mm 60 ≤610mm ±0.5%D～±1.6mm 4mm ±12.5%T～±15.0%T
610 ≤1430mm ±0.5%D～±4mm 610 ≤1430mm ±0.5%D～±1.6mm WT≥25mm -3.00mm～+3.75mm
OD>1430mm – OD>1430mm – – -10.0%～+17.5%
SY/T5037 OD<508mm ≤±0.75% OD<508mm ≤±0.75% OD<508mm ≤±12.5%
OD≥508mm ≤±1.00% OD≥508mm ≤±0.50% OD≥508mm ≤±10.0%
API 5L PSL1/PSL2 OD<60.3 -0.8mm～+0.4mm OD≤168.3 -0.4mm～+1.6mm WT≤5.0 ≤±0.5
60.3≤OD≤168.3 ≤±0.75% 168.3 ≤610 ≤±1.6mm 5.0 ≤±0.1T
168.3 ≤610 ≤±0.75% 610 ≤1422 ≤±1.6mm T≥15.0 ≤±1.5
610 ≤1422 ≤±4.0mm OD>1422 – – –
OD>1422 – – – – –
API 5CT OD<114.3 ≤±0.79mm OD<114.3 ≤±0.79mm ≤-12.5%
OD≥114.3 -0.5%～1.0% OD≥114.3 -0.5%～1.0% ≤-12.5%
ASTM A53 ≤±1.0% ≤±1.0% ≤-12.5%
ASTM A252 ≤±1.0% ≤±1.0% ≤-12.5%

Process

Packing


according to the regulations and customer’s requests. great care is taken to avoid any damage which might be caused during storage or transportation. in addition, clear labels are tagged on the outside of the packages for easy identification of the product i. d. and quality information.



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