GB/T9711-1999 Oil Dipping Carbon Steel Line Pipe for Oil/Natural Gas/Chemical/Electric Power Equipment

• Customization: Available
• Type: Seamless
• Technique: Cold Rolled
• Model NO.: GB/T9711-1999
• Surface Treatment: Polished
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Special Purpose
• Section Shape: Round
• Products: Supplier Manufacturing Price Per Kg DIN 2448 ASTM
• Standard Specifications: ASTM A106 ASTM a 53 M ASTM a 106m
• Steel Grade1: L245b, L290 X42, L320 X46 , L360 X52
• Steel Grade2: Stpg 370, Stpg 410, Stpg370, Stpg410, Stpg480
• Main Process: Cold-Formed Seamless
• Wt: 1.25mm - 50mm Sch10,Sch40,Sch60,Xs,Sch80,Std,Xxs
• Od: 13.72-4064mm
• Length: 0.5m-20m
• Ends: Square Ends/Plain Ends
• Delivery: 7-35 Days
• Surface: Pickled, Bright Annealed, Polished
• Package: Packed by Bundles, Plastic Bags, Wooden Case,etc
• Usage 1: Pipeline Transport, Boiler Pipe, Hydraulic/Automob
• Usage 2: General Structure and Mechanical,Structure Purpose
• Usage 3: Electronics, Industrial, Food, Boiler
• Transport Package: Seaworthy Package
• Specification: 0.8mm-25mm
• Trademark: EZ Steel
• Origin: China
• HS Code: 73043110
• Production Capacity: 500000/Year

Product Description

GB/T9711-1999 Oil Dipping Carbon Steel Line Pipe for Oil/Natural gas/Chemical/Electric Power Equipment 

 

 

Pipeline pipes are mainly used for pipelines that transport oil and natural gas. It is mainly used in oil, natural gas, chemical, electric power equipment and other industries.

Specifications
Out Diameter	1/4 inch-36 inch
Wall Thickness	1.25 mm-50 mm
Length	3.0m-18m
Surface treatment	oil dipping, shot blasting, painting, etc.
Delivery status	annealed, normalized, normalized + tempered and other heat treatment states

 

Standard:
API Spec 5L- American Standard    

GB/T9711-1999- National Standard

Tolerances on Dimensions:
Standard:	OD Tolerance		WT Tolerance
API Spec 5L	D< 60.3mm	0.41mm,-0.8mm	15%/-12.5%
	D≥ 60.3mm	±0.75%
GB/T9711-2	±0.5mm or ±0.75%		T≤ 4	0.6mm/-0.5mm
			4≤T≤ 25	15%/-12.5%
Mechanical Properties:
Standard	Grade	Tensile strength (MPa)	Yield strength (Mps)	Elongation (%)
GB/T9711-1	L245	415	245	≥21
	L290	415	290	≥21
	L320	435	320	≥20
	L360	460	360	≥19
	L415	520	415	≥17
GB/T9711-2	L245NB	415	245~440	≥22
	L290NB	415	290~440	≥21
	L360NB	460	360~510	≥20
	L415NB	520	415~565	≥18
	L450QB	535	450~570	≥18
API Spec 5L PSL1/PSL2	BN	415~760	245~450	≥22
	X42N	415~760	290~495	≥21
	X52N	460~760	360~530	≥20
	X56N	490~760	390~545	≥18
	X60N	520~760	415~565	≥18
	X65Q	535~760	450~600	≥18
	X70Q	570~760	485~635	≥18
	X80Q	625~825	555~705	≥18
	X42NS	415~760	290~495	≥21
	X52NS	460~760	360~530	≥20

ASTM / ASME

Product Name	Executive Standard	Dimension (mm)	Steel Code / Steel Grade
Black and Hot-Dipped Zinc-Coated Seamless Steel Pipes	ASTM A53	Ø10.3~1200 x WT1.0~150	Gr.A, Gr.B, Gr.C
Seamless Carbon Steel Pipes for High Temperature Service	ASTM A106	Ø10.3~1200 x WT1.0~150	Gr.B, Gr.C
Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes	ASTM A179	Ø10.3~426 x WT1.0~36	Low Carbon Steel
Seamless Carbon Steel Boiler Tubes for High Pressure	ASTM A192	Ø10.3~426 x WT1.0~36	Low Carbon Steel
Seamless Cold-Drawn Intermediate Alloy Steel Heat-Exchanger and Condenser Tubes	ASTM A199	Ø10.3~426 x 1.0~36	T5, T22
Seamless Medium-Carbon Steel Boiler and Superheater Tubes	ASTM A210	Ø10.3~426 x WT1.0~36	A1, C
Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-Exchanger Tubes	ASTM A213	Ø10.3~426 x WT1.0~36	T5, T9, T11, T12, T22, T91
Seamless Carbon and Alloy Steel for Mechanical Tubing	ASTM A333	Ø1/4"~42" x WT SCH20~XXS	Gr.1, Gr.3, Gr.6
Seamless and Welded Carbon Steel Pipes and Alloy Steel Pipes for Low Temperature Use	ASTM A334	Ø1/4"~4" x WT SCH20~SCH80	Gr.1, Gr.6
Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes	ASTM A556	Ø10.3~426 x WT1.0~36	A2, B2

 

Chemistry Composition

C, %	Mn, %	P, %	S, %
0.30 max	0.40-1.06	0.025 max	0.025 max

Mechanical Properties

Tensile Strength , MPa	Yield Strength, MPa	Elongation, %	Hardness, HB
380 min	205 min	35 min	163 max

Outside Diameter & Tolerance

Hot rolled	Outside Diameter, mm	Tolerance, mm
	OD≤101.6	+0.4/-0.8
	101.6	+0.4/-1.2
	190.5	+0.4/-1.6
Cold Drawn	Outside Diameter , mm	Tolerance, mm
	OD<25.4	±0.10
	25.4≤OD≤38.1	±0.15
	38.1	±0.20
	50.8≤OD<63.5	±0.25
	63.5≤OD<76.2	±0.30
	76.2≤OD≤101.6	±0.38
	101.6	+0.38/-0.64
	190.5	+0.38/-1.14

Wall thickness & Tolerance

Hot rolled	Outside Diameter , mm	Tolerance, %
	OD≤101.6, WT≤2.4	+40/-0
	OD≤101.6, 2.4	+35/-0
	OD≤101.6, 3.8	+33/-0
	OD≤101.6, WT>4.6	+28/-0
	OD>101.6, 2.4	+35/-0
	OD>101.6, 3.8	+33/-0
	OD>101.6, WT>4.6	+28/-0
Cold Drawn	Outside Diameter , mm	Tolerance, %
	OD≤38.1	+20/-0
	OD>38.1	+22/-0

 

 

FAQ

Q:  How many days can you deliver after confirmed the order?
A:  For stock:  within 5-7 days;
      For customized product:  around 30 days;
      For special sizes:  subject to negotiation.

Q: How does your company do quality control?
A: ISO 9001:2015 certified;
     Product certificate as per EN10204 3.1 or 3.2 as per customer's request.
    
  
Q: Can I have a factory-visit?
A:  Surely. All customers are welcome to visit us in China.

Q: Can I have a trial order?
A: Of course, it is an honor for us to have the opportunity to show our quality and service. 
 

Company Profile

	Business Type:	Manufacturer/Factory
	Main Products:	Carbon Steel Pipe , Stainless Steel Pipe , Copper Nickel Tube , Heat Exchanger Tube , Boiler ...
	Registered Capital:	2000000 RMB
	Plant Area:	>2000 square meters
	Management System Certification:	ISO 9001, ISO 14001, OHSAS/ OHSMS 18001, ANSI/ESD
	Average Lead Time:	Peak Season Lead Time: 1-3 months Off Season Lead Time: within 15 workdays

SGS Serial NO. :

QIP-ASI199413Report Verification

EZ STEEL INDUSTRIAL Co., Ltd, together with LONG-RUN METALS Co., Ltd, is the export division and window company of EZ STEEL GROUP, which was founded in 1996 and has been committed to the development and manufacturing of industrial tubes in the past 20 years. It is one of the largest steel tube manufacturing enterprise groups in China. The group possess fixed assets over 200million and more than 800 employees with annual production capacity over 300 thousand tons.

The company has continuously introduced the world advanced manufacturing equipment and now is able to produce welded and seamless steel tube, copper tube and nickle alloy tube. We also have our own coating facilities and workshops for further processing. After years of development, EZ STEEL GROUP and the affiliated enterprises have obtained many kinds of domestic and international certifications including ISO 9001 Quality Management System Certification, ISO14000 Environment Management System Certification, CE, License for Manufacture of Pressure Piping in China, etc. The company has obtained good domestic achievements and is the nominated supplier of CNPC and CNOOC. The product are exported to Southeast Asia, the Middle East and Africa, Europe, Australia, North and Latin Americas via trade companies, and are widely used in pipeline works, foundation works, steel structure works, boiler and condenser fabrication, oil refinery plant, power plant, sugar-making plant, ship-building and offshore construction projects etc.

Holding the concept of First-class Brand, First-class Service, First-class Value, EZ STEEL GROUP is aiming to build up a win-win enterprise platform for both our customers and employees.

CONTACT US
Contact: Rosy Xu
EZ STEEL INDUSTRIAL CO., LTD
Add: No.66,  Zhongyi Road, Yuhua Industrial Zone, Changsha City , P.R China 

Pls. do not hesitate to contact me if you have any questions!

You are warm welcomed to visit our factory!!!

Thank you for visiting our products & Looking forward to hearing from you!