Q235 welde steel pipe price
With the rapid development of high-quality strip continuous rolling production and the progress of welding and inspection technology, the weld quality has been continuously improved, the varieties and specifications of welded steel pipes have been increasing, and seamless steel pipes have been replaced in more and more fields. Welded steel pipes are divided into straight welded pipe and spiral welded pipe according to the form of weld. Classification by production method: process classification - arc welded pipe, resistance welded pipe, (high frequency, low frequency) gas welded pipe, furnace welded pipe.
Q235 welded steel pipe standard description
Q235 welded steel pipe is adopted for small diameter welded pipe, while spiral welding is mostly adopted for large diameter welded pipe; According to the end shape of steel pipe, it is divided into circular welded pipe and special-shaped (square, rectangular, etc.) welded pipe; According to different materials and uses, it is divided into welded steel pipe for mining fluid transportation, galvanized welded steel pipe for low-pressure fluid transportation, electric welded steel pipe for belt conveyor idler, etc. According to the specification and size table in the current national standard, it is sorted from small to large according to outer diameter * wall thickness.
Q235 welded steel pipe price
These days the steel raw material price is rised too much, so the welded steel pipe price is increased accordingly, Q235 welded steel pipe is FOB Tianjin Port 750 usd/ton now, on the 13th, the price of Youfa steel pipe group increased by 30 yuan / ton. Now Youfa's 4-inch 3.5 specification is listed at 6940 yuan / ton for galvanized pipe and 11450 yuan / ton for steel plastic pipe, including tax.
Common materials of welded pipes are: Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00cr19ni11, 1Cr18Ni9, 0cr18ni11nb, etc.
What are the classifications of welded pipes
The blank used for welded steel pipe is steel plate or strip steel. Due to different welding processes, it is divided into furnace welded pipe, electric welding (resistance welding) pipe and automatic arc welded pipe. Because of their different welding forms, they are divided into straight seam welded pipe and spiral welded pipe. Because of its end shape, it is divided into circular welded pipe and special-shaped (square, flat, etc.) welded pipe.