China Manufacturer GB/T 3639-2021 Standard Cold Rolled Precision Seamless Steel Pipe For Pneumatic Component

Cold Rolled Seamless Steel Pipe

Cold rolled precision seamless steel pipe is a high-precision steel pipe material. The main categories are: precision seamless steel pipe, precision hydraulic seamless steel pipe, cold-drawn precision seamless steel pipe, cold-rolled precision seamless steel pipe, high-precision seamless steel pipe, precision bright seamless steel pipe.

Application

Used in hydraulic system piping, automobile manufacturing piping, military industry, construction machinery, railway locomotives, aerospace, ships, injection molding machines, die-casting machines, machine tools, diesel engines, petrochemicals, power plants, boiler equipment and other industries .

1. Packing: Seamless Steel Pipe will packing in bundles/in bulk/in plastic packing.
2. Trade terms:FOB/CFR/CIF
3. Shipping port:Qingdao,Tianjin,Shanghai
4. Shipment:
1) Small diameter: Weight >Measurement
a. Length: ≤5.8m, loaded in 20FT Container, Max 27-28tons
b. Length: ≤11.8m, loaded in 40 FT Container, Max 27-28tons
c. Length: ≥12m, shipped by bulk vessel. FILO terms
2) Big dimater: Weight a. Size of 20 FT Container(inside :5898*2352*2350mm)(12024*2352*2395mm)
5.Delivery time: Normal size: 7days send from warehouse directly. Special size: 25-30days custom made for you.

Production Process

Different processing methods and corresponding auxiliary procedures are selected according to the processing performance of the metal, the size of the pipe, the quality requirements, and the investment and benefits. The basic processes of cold-rolled and cold-drawn pipes are:

(1) pipe material supply, the pipe materials used are hot-rolled finished pipes or semi-finished pipes, extruded pipes and welded pipes;

(2) pipe material preparation, including inspection, bundling, acid Washing, cleaning, rinsing, neutralizing, drying, lubricating, etc.;

(3) Cold working (cold rolling or cold drawing);

(4) Finishing of finished products includes heat treatment of finished products, straightening, sampling, cutting heads and tails, inspection ( Manual inspection and various flaw detection), hydraulic test, oiling, packaging, storage, etc. Different products have different finishing contents.

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