Construction

ASTM A847 weathering steel pipe is a cold-formed welded and seamless high-strength, low-alloy round, square, rectangular or special-shaped structural pipe.

API 5L grade b pipe generally refers to Seamless and Welded line pipes used for transportation of oil and gas from one location to another location, these pipes are mainly used in industries such as oil and gas refineries, petrochemical plants.

ASTM A335 P11 Pipe (ASME SA335 P11) is Chrome Moly Alloy Seamless Pipe that used for high-temperature services, P11 Grade Pipe Chrome content at 1.00% to 1.50%, Moly content 0.44% to 0.65%, Minimum tensile strength 415MPa, minimum yield strength 205Mpa.

Integral heavy weight drill pipe is the transition zone between drill collar and drill pipe. It can not only reduce stress-formation in the connection of drill collar and drill pipe, but also reduce the wear on OD.