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天津市北辰区中关村可信产业园B9-1 Address: B9-1, Trustworthy Industrial Park, Zhongguancun, Beichen District, Tianjin

15522233345 Mobile: 15522233345

许宗涛 Contact: Xu Zongtao

Seamless steel pipe 6




16mn straight seam pipe production (Produce) process | 16mn steel pipe quality test (quality test) straight seam welded pipe quality inspection welded steel pipe should be tested for mechanical properties (xìng néng) and flattening test and flaring test, and must meet the standard Prescribed requirements. GB9948 seamless steel pipe seamless steel pipe is expressed as outer diameter, wall thickness, thick wall seamless steel pipe is mainly used for machining, coal mine, hydraulic steel, and other purposes. The steel pipe should be able to withstand a certain internal pressure (pressure). If necessary, a 2.5Mpa pressure test is performed to maintain no leakage for one minute. The eddy current (also known as: Foucault current) method is allowed to replace the hydrostatic test. Eddy current testing is performed in accordance with GB7735 "Testing Methods for Steel Tube Eddy Current Testing". The eddy current flaw detection method is to fix the probe on the frame, maintain a distance of 3 ~ 5mm between the flaw detection and the weld, and perform a comprehensive scan of the weld by the rapid movement of the steel pipe. The flaw detection signal is processed and processed automatically by the eddy current flaw detector. Sorting to achieve the purpose of flaw detection. After welding, the welded pipe is cut (cut; cut off) with a specified length and then taken off the line through the turning frame. The two ends of the steel pipe should be chamfered with flat heads, printed with a mark, and the finished pipe should be packed in a hexagon after packing. The material of straight seam welded pipe (The material) Commonly used domestic materials are generally Q235A, Q235



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General Manager: Xu Zongtao Phone: 15522233345 Address: B9-1, Trustworthy Industrial Park, Zhongguancun, Beichen District, Tianjin
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