China Customized Large Diameter Welded Pipe Manufacturers Suppliers Factory - Discount Price

Introduction of Large Diameter Welded Pipe:

Large Diameter Welded Pipe, as the name suggests, refers to pipes with a significant diameter fabricated through welding techniques. These pipes find extensive usage in various industries and infrastructure projects due to their robustness, durability, and versatility.

Product Name	Large Diameter Welded Pipe
Standard	ASTM A53 Gr.B; API 5L: Gr.B,X42,X46, X52,X56,X60,X65,X70,X80 PSL1 and PSL2; ASTM A252, ASTM A500, AS/NZS 1163, AS/NZS1074, EN10219, EN10217 and etc
Welding Type	LSAW(Longitudinally Submerged Arc Welding), DSAW(Double Submerged Arc Welding), SSAW(Spirally Submerged Arc Welding)
Outer Diameter	12"-120" (323.9mm--3048mm)
Thickness	SCH10-SCH160 (6.35mm-59.54mm)
Length	6m-18m
End	BE(Beveled Ends), PE(Plain Ends)
Test	Chemical Component Analysis, Mechanical Properties (Tensile strength, Yield strength, Elongation), Ultrasonic Testing, NDT(nondestructive testing), Hydrostatic Test, X-ray Test
Fastest Delivery Time	7 Days for normal specification

Large diameter steel pipe

Large Diameter Welded Pipe

Large Diameter Welded Pipe Specification:

Outer Diameter		Norminal Wall Thickness(mm)
INCH	MM
12-120	323.9-3048	6.35-59.54

Chemical Composition and Mechanical Properties:

Standard	Grade	Chemical Composition(max)%					Mechanical Properties(min)
Standard	Grade	C	Si	Mn	P	S	Tensile Strength(Mpa)	Yield Strength(Mpa)
API 5L PSL1	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	1.2	0.025	0.015	415	415
	X42	0.22	0.45	1.3	0.025	0.015	415	415
	X46	0.22	0.45	1.4	0.025	0.015	435	435
	X52	0.22	0.45	1.4	0.025	0.015	460	460
	X56	0.22	0.45	1.4	0.025	0.015	490	490
	X60	0.12	0.45	1.6	0.025	0.015	520	520
	X65	0.12	0.45	1.6	0.025	0.015	535	535
	X70	0.12	0.45	1.7	0.025	0.015	570	570
	X80	0.12	0.45	1.85	0.025	0.015	625	625
ASTM A53	B	0.3	0.1	1.2	0.05	0.045	415	415
ASTM A252	1	-	-	-	0.05	-	345	345
	2	-	-	-	0.05	-	414	414
	3	-	-	-	0.05	-	455	455
EN10219-1	S235JRH	0.17	-	1.4	0.04	0.04	360	360
	S275JOH	0.2	-	1.5	0.035	0.035	410	410
	S275J2H	0.2	-	1.5	0.03	0.03	410	410
	S355JOH	0.22	0.55	1.6	0.035	0.035	470	470
	S355J2H	0.22	0.55	1.6	0.03	0.03	470	470
	S355K2H	0.22	0.55	1.6	0.03	0.03	470	470

Our Advantages for Large Diameter Welded Pipe:

· Competitive Price: We have long-term stable cooperation with raw material factories, mature and complete production supporting facilities, a rigorous quality control system, and an integrated model that keeps our production costs at a relatively low level.

· Fast Delivery Time: The production of steel pipes with standard specification can be completed in as fast as 7 days.

· Complete Certification: All types of certificates are available, including API 5L certificate, ISO 9001 certificate, ISO 14001 certificate, FPC certificate, Environmental Quality System certificate, and more.

· Advanced Production Equipment: We imported the equipment from Germany and developed independently four production equipments.

· Professional Team: We have over 300 employees, including more than 60 technical personnel, and possesses an independent equipment research team.

· Comprehensive Testing Facilities: We are equipped with various testing facilities, including but not limited to online ultrasonic automatic flaw detectors, industrial X-ray television and other essential testing equipment.

Application:

Longma Group's Large Diameter Welded Pipe finds wide-ranging applications in:


Oil and gas pipelines	Structural support for bridge, building construction

Water and liquid transportation	Piling and foundation work in construction project

Offshore/Onshore construction	Electricity and Heating power

Frequently Asked Questions (FAQ):

Q1. What are the manufacturing standards adhered to by Longma for Large Diameter Welded Pipes?

A1. Longma strictly complies with international manufacturing standards, including ASTM, API, and ISO, ensuring that our pipes meet the highest quality and performance criteria.

Q2. Can Longma provide custom sizes and specifications for Large Diameter Welded Pipes?

A2. Yes, Longma offers customization services to meet specific project requirements. Our experienced team works closely with clients to deliver tailored solutions that align with their needs.

Q3. How does Longma ensure the quality and integrity of its Large Diameter Welded Pipes?

A3. Longma implements stringent quality control measures throughout the manufacturing process, from raw material selection to final inspection. Our commitment to quality assurance ensures that every pipe meets industry standards and exceeds customer expectations.

About Longma Group:

Longma Group is a renowned manufacturer and supplier of Large Diameter Welded Pipes, committed to delivering high-quality products and exceptional service to clients worldwide. With a focus on innovation, reliability, and customer satisfaction, we strive to exceed industry standards and set new benchmarks in the field of pipe manufacturing. For inquiries or orders, please contact Longma at info@longma-group.com. Our dedicated team is ready to assist you with your requirements and provide timely solutions to meet your project needs. Large Diameter Welded Pipes offered by Longma Group represent the pinnacle of quality, reliability, and performance in the industry. With a comprehensive range of sizes, superior mechanical properties, and unmatched customer service, Longma is the preferred choice for clients seeking top-notch piping solutions for their projects. Trust Longma for all your Large Diameter Welded Pipe needs and experience the difference in quality and service.

Longma Group

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