Q195/Q235/Q345 /S275/S235/St37/St52 Steel Hollow Section

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Q195/Q235/Q345 /S275/S235/St37/St52 Steel Hollow Section

Customization:	Available
Type:	Welded
Technique:	Cold Rolled/Cold Formed/Hot Finished/Cold Drawn

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Product Description

Basic Specifications

Model NO.ASTM, GB, EN, AP

MaterialASTM, BS, En, JIS, GB, API, DIN

Surface TreatmentBared, Oiled, Color Paint, 3lpe, or Other

UsagePipeline Transport, Oil/Gas Drilling, Machinery Industry, Construction

Section ShapeRound, Square, Rectangular

ItemWelded/ERW Steel Pipe

Length5.8~12m or Customized

SecondaryNon-Secondary

Transport PackageStandard Seaworthy Packing

SpecificationCE, ISO, SGS Approved

OriginChina Mainland

Capacity250,000 Ton/Year

Product Technical Specification

Commodity	Q195/Q235/Q345/S275/S235/ST37/ST52 Steel Hollow Section
Outer Diameter	ERW / HFW	LSAW / DSAW	SSAW / HSAW	RHS	SHS
Outer Diameter	1/8 - 20 inch	12 - 56 inch	8 - 126 inch	40x20 - 1000x800mm	15x15 - 1000x1000mm
Wall Thickness	0.4 - 16 mm	6.0 - 40 mm	6.0 - 26 mm	1.0 - 30 mm	0.6 - 30 mm
Length	5.8 ~ 12.0 m or upon requirements
Standard	GB/T 3091, ASTM A53, ASTM A500, EN 10210, EN 10219, API 5L, DIN 1626, etc.
Grade	Q235, Q345, S235, S355, Grade A/B, X42, X52, X60, X70, etc.
Surface	Prime quality (bared, oiled, color paint, 3LPE, or anti-corrosive)
Application	Structure, power transmission, piling, oil & gas pipeline, municipal projects.
Delivery Time	20-45 days after deposit or L/C confirmation

Why Choose Our Steel Pipes

More than 20 years of manufacturing experience.
Strong R&D capabilities and engineering support.
Comprehensive OEM and ODM service availability.
Assistance in material and metallurgical grade selection.
Strict adherence to Classification Society specifications.
Advanced quality control and laboratory testing.
Logistics optimization for large shipments.
Dedicated problem-investigation and after-sales support.

Quality Control & Application

As a professional manufacturer and designer of welded steel pipes with over 20 years of experience, we maintain an excellent reputation for product quality and financial strength. We own complete detection devices for chemical composition analysis and mechanical properties testing in our private laboratory.

Our pipes are widely utilized in electric power transmission, water/oil/gas pipeline engineering, mechanical industry, municipal roads, and structural piling, marking their presence in key national and international projects.

Frequently Asked Questions

What international standards do your steel pipes follow?

Our pipes are manufactured according to major global standards including ASTM A53, ASTM A500, EN 10210, EN 10219, API 5L, and GB/T 3091.

What are the available surface treatments?

We offer multiple options including bared finish, oiled coating, color painting, 3LPE, and other specific anti-corrosive treatments based on project needs.

What is the typical lead time for an order?

Standard delivery time is between 20 to 45 days after receiving the deposit or a confirmed L/C, depending on the total order quantity.

Can I request customized pipe lengths?

Yes, while our standard lengths are 5.8m to 12.0m, we can provide specific lengths tailored to your unique requirements.

How do you ensure the quality of the products?

We conduct thorough inspections including Chemical Composition Analysis, Mechanical Properties Tests, Dimensional/Visual Inspection, and Nondestructive Inspection in our own laboratories.

What are your standard payment terms?

We generally accept T/T (30% advance, 70% against B/L copy) or L/C at sight. A combination of T/T and L/C is also available.