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API 5L/ASTM A53 GR.B (Hot Rolled ERW Steel Pipe)
API 5L/ASTM A53 GR.B (Hot Rolled ERW Steel Pipe) Outside Diameter Wall Thickness FOB TIANJIN Outside Diameter Wall Thickness FOB TIANJIN 外径 (mm) 壁厚 (mm) 离港价 USD/TON 外径 (mm) 壁厚 (mm) 离港价 USD/TON 219、245 5.0-11.75 528.33 426 5.75-11.75 559.94 273 5.0-11.75 528.33 12.5-13...Read more -
API 5L GR.B/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE)
API 5L GR.B/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE) Outside Diameter Wall Thickness FOB TIANJIN Outside Diameter Wall Thickness FOB TIANJIN 外径 (mm) 壁厚 (mm) 离港价 USD/TON 外径 (mm) 壁厚 (mm) 离港价 USD/TON 245, 273 5.0-9.28 545.02 450, 457, 508, 530 6.5-11.98 576.62 9.4...Read more -
The reason for the misalignment of the head or tail of the steel pipe
The reason for the misalignment of the head or tail of the steel pipe 1) The position of the import and export rollers is incorrect; 2) The center of the ring frame is wrong; 3) The roundness of the seam pressure roller is not good, and the position of individual pressure rollers is deviated; ...Read more -
Acceptance of straight seam steel pipe
1. The inspection and acceptance of straight seam steel pipes shall be carried out by the technical supervision department of the supplier. 2. The supplier guarantees that the delivered straight seam steel pipes meet the requirements of the corresponding product standards. The buyer has the right...Read more -
Quenching technology of straight seam welded pipe
Straight seam welded pipe surface quenching, tempering, heat treatment is usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local hardness and effective hardened layer depth. Hardness testing can use Vickers hardness tester, Rockwell or...Read more -
Pipeline leak monitoring system
The pipeline leakage monitoring system is the pipeline leakage information management, which monitors the liquid (crude oil or other liquids) transportation pipelines throughout the day, minute and second. Once the pipeline leaks, the monitoring system can alarm in time through its information ma...Read more -
ERW PRICE LIST
Hunan Great Steel Pipe Co., Ltd 22ND FLOOR, ROYAL WING BUILDING IN LONGCHAMP INTERNATIONAL MANSION, NO.9, XIANGFU ROAD, CHANGSHA CITY HUNAN, P.R. CHINA ERW PRICE LIST Date:June 09th, 2020 Diameter 21.3-426mm API 5L/ASTM A53 GR.B Size(OD*WT(mm) Unit Price(US$/Ton) Size(OD*WT...Read more -
SMLS PRICE LIST
Hunan Great Steel Pipe Co., Ltd 22ND FLOOR, ROYAL WING BUILDING IN LONGCHAMP INTERNATIONAL MANSION, NO.9, XIANGFU ROAD, CHANGSHA CITY HUNAN, P.R. CHINA SMLS PRICE LIST Material: API5L/ASTM A106/ASTM A53 GR.B ...Read more -
China steel futures dip on global weak demand, rainy season uncertainties
China steel futures dip on global weak demand, rainy season uncertainties Shanghai rebar, HRC futures fall in early trade Iron ore futures retreat from two straight sessions of gains Spot iron ore prices jump to $106 per tonne BEIJING, June 9 (Reuters) – China’s steel rebar and hot-ro...Read more -
Steel China’s Jan-May steel exports down 14%, imports up 12%
Over January-May, China’s steel exports declined more steeply by 14% on year, while steel imports rose 12% on year, according to the latest statistics from China’s General Administration of Customs (GACC) on June 7, as lower-priced overseas supplies had been sold to China when steel demand in oth...Read more -
Classification of pipeline trenchless technology
Trenchless technology can be divided into three categories: laying new pipelines, repairing and replacing old pipelines, and detecting the original pipeline network. 1.Construction techniques for laying new pipelines: shield method, pipe jacking method, pilot / directional drilling pipe laying me...Read more -
Tensions between China and the United States reignite and U.S. oil prices fall
Over the past few weeks, oil prices have continued to rise, but because there is no sign of recovery in the short term, the upward momentum has stalled. At the same time, this week, the tension between China and the United States has put heavy pressure on the financial and commodity markets. Tens...Read more