34CrMo4 Seamless Steel Tube For Gas Cylinder

Product Details

Product Details

Standard

Grade

OD

WT

Remarks

ASTM A519

4130?4140?4142?4145

219-720mm

5-50mm


EN10297

30CrMo4?42CrMo4

219-720mm

5-50mm


DOT-3AA/3AAX

4130X

406-720mm

5-25mm


GB18248

37Mn?34Mn2V?30CrMo?35CrMo?34CrMo4

219-720mm

5-30mm


GB28884

30CrMoE?42CrMoE

219-720mm

5-50mm


Note: Other sizes can also be provided after consulting with customers

34CrMo4 seamless steel tube for gas cylinder is mainly used in the production of various gas welded steel pipes, hydraulic cylinders. The representative materials are 37Mn, 34Mn2V, 35CrMo, and the like.

Production Process

The production process of general seamless steel pipes can be divided into cold drawing and hot rolling.  Cold-rolled seamless steel pipe is generally more complicated than hot rolling. The pipe blank must first be rolled in three rolls. Sizing test, if the surface does not respond to the crack, the round tube is cut by a cutter and cut into a blank of about one meter in length. 

Then enter the annealing process, the acidification should be acid washed with acid liquid, pickling should pay attention to whether there is a lot of foaming on the surface if there is a lot of foaming, the quality of the steel pipe can not meet the response standard. The appearance of a cold-rolled seamless steel pipe is shorter than that of a hot-rolled seamless steel pipe. The wall thickness of a cold-rolled seamless steel pipe is generally smaller than that of a hot-rolled seamless steel pipe, but the surface looks brighter than thick-walled seamless steel pipe, and the surface is not too It's rough and there aren't too many burrs in the caliber. 

The delivery status of the hot-rolled seamless steel pipe is generally delivered after the heat treatment in the hot rolled state. After the quality inspection, the hot-rolled seamless steel pipe is subjected to strict manual selection by the staff. After the quality inspection, the surface is oiled, followed by multiple cold drawing experiments, and the perforation experiment is performed after the hot rolling treatment. If the perforation is too large, straightening correction is required. After straightening, the conveyor is sent to the flaw detector for flaw detection experiments, and finally labeled, formatted, and placed in the warehouse.

Our Services:
As for our services, we make production according to customer's specific requirements strictly and accept inspection during the production or before shipment. We also provide the original copy of MTC (Mill testing certificate) as well as the standard seaworthy packing. In addition, we arrange the most professional shipment.

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Third Party inspection that is preferred by new customers is proved to be convincing. Through years of operation, M/S Ruicheng Steel has established stable contact with world famous third party inspection authorities, like Lloyd`s, BV, SGS, ABS, Intertek, etc. More than 10,000Mtons of steel pipes, tubes, fittings and flanges have been inspected by them.

Any questions or inquiries will be highly appreciated.

Kindly please contact us freely at gracewang@ruichengsteel.cn

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