Largest Oil and Natural Line Pipe

Largest Oil and Natural Line Pipe

Galvanized Pipe Type
Pre Galvanized or Electrical Galvanized
Galvanized Volume 60~270G/M2
Galvanized Pipe Outer Diameter 21~165mm
Pipe Wall Thickness 0.6~6mm
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Product Details

Product Details

Largest Oil and  Natural Line Pipe .Bubbles occur in the weld pass, the main reason is that hydrogen is still hidden in the form of bubbles in the weld metal, so, the measure of this defect is the first must wire and weld rust

Brief Introduction

largest pipeline 

Out diameter219.1mm -1820mm (8” -72”)
Wall Thickness5.0 -50mm
Lengthup to 30m
StandardAPI 5L, API 5CT, ASTM 53, EN10217, DIN 2458. IS 3589, GB/T3091, GB/T9711
CertificateAPI 5L PSL1 / PSL2, API 5CT


Steel Grade

API 5L: GR B, X42,X46, X56, X60,X65,X70
Surface TreatmentFusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement 
TestChemical 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.
Mill Test Certificate 

EN 10204/3.1B

Largest Oil and  Natural Line Pipe  occur in the weld pass, the main reason is that hydrogen is still hidden in the form of bubbles in the weld metal, so, the measure of this defect is the first must wire and weld rust, oil, water and moisture and other substances, followed by a good drying flux to remove moisture.In addition, it is effective to increase the current, reduce the welding speed and slow down the solidification rate of molten metal.Generally, the accumulation thickness of flux is 25-45mm. The Largest Oil and  Natural Line Pipe accumulation thickness of flux with large particle size and small density takes the value; otherwise, it takes the small value.High current, low welding speed, accumulation thickness value, otherwise take Largest Oil and  Natural Line Pipe a small value, in addition, summer or air humidity is large, recycled flux should be dried before use.Sulfur crack (sulfur crack).A crack caused by the inclusion of sulfide in the sulfur segregation zone into the weld metal when welding a plate with a strong sulfur segregation zone (especially soft boiling steel).The reason is the presence of hydrogen in iron sulfide and steel with low melting point in the sulfur segregation zone.

Product details

产品照 23

产品照 (1)

The Application


Certifications of product


The Packing Process Flow


The Packing Process Flow


The Workshop

Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

 has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 

We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.

工厂 (1)


Why to choose us?

1.We provide products to our customers individual specifications and special needs with competitive price and best service.

2. Immediate respond

We will be 24/7 on line at your services. Provide one-to-one service with our sincerity.

3. Professional suggestions

We could provide you the professional suggestion with our expertise acumen.

4. Short delivery period

We are based on a long-term cooperation with several major domestic steel company with an outstanding advantage is sufficient supply. Shorter the supplying period.

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