electric resistance welded (erw) pipe is manufactured by cold forming a flat steel strip into a rounded tube and passing it through a series of forming rollers to obtain a longitudinal seam. the two edges are then simultaneously heated with a high frequency current and squeezed together to

seamles

api 5l/astm a53 gr.b, carbon steel, lsaw steel

api 5l/astm a106 gr.b, seamless carbon steel pipe

ferritic steel is a grade of stainless steel alloy that contains over 12% chromium. it differs from other forms of stainless steel in two critical regards: its molecular grain structure and its chemical composition.ferritic stainless steel is actually defined as a stra

china oil & gas pipeline network corp, the country39;s largest energy infrastructure company, said it has started tunneling through the yangtze river for its china-russia east-route natural gas pipeline on last tuesday, marking new progress in the two countries39; energy cooperation to improv

api 5l/astm a53 gr.b (hot rolled erw steel pipe)outside diameter

api 5l/astm a106 gr.b, seamless carbon steel pipe

threaded coupling ends design (npt or bsp)in case of the threaded coupling, the coupling ends normally in female of npt (national pipe threads) or in male and female bsp (british standard p

welded pipes are manufactured from plate or continues coil or strips. to manufacture a welded pipe, the first plate or coil is rolled in the circular section with the help of a plate bending machine or by a roller in the case of a continues process.once t

api 5l gr.b/astm a53 gr.b (hot expanded erw steel pipe)

api 5l/astm a106 gr.b, seamless carbon steel pipe

api 5l gr.b/astm a53 gr.b, carbon steel, lsaw

psl is short for product specification level. the product specification level of pipeline pipe can be divided into psl1 and psl2, which can also be said that the quality level can be divided into psl1 and psl

lsaw and ssaw are variants of saw (submerged arc welded) pipes. the difference between them is the way they are welded. in lsaw pipes, the welding is longitudinal, which means that steel (hot rolled coil plate) is rolled into a pipe and the seam is welded longitudinally. in the ssaw type,

the halt to construction of the keystone xl oil pipeline, long a point of contention between climate activists and the energy industry, has caused a ripple in us-canada relations.

pipe pile is normally used for stabilization to support a deep foundation to bear the heavy load capacity of the building structures or seaport projects, cofferdam construction, marine foundation farther down the earth’s surface.the steel pipe pile is a type of spiral

from 2014 to 2018, the demand for seamless steel pipes in china decreased year by year. in 2018, the demand for seamless steel pipes in china was 20.86 million tons, a decrease of 5.94% year-on-year. in 2019, the demand for seamless steel pipes in china was 23.77 million tons. a year-on-ye