ASTM A178 is a standard specification that covers minimum-wall-thickness, electric-resistance-welded tubes made of carbon steel and carbon-manganese steel intended for use as boiler tubes, boiler flues, superheater flues, and safe ends.

ASTM A139 is a standard specification for electric-fusion (arc)-welded steel pipe (NPS 4 and over).

ASTM A671 GR.CC60 steel pipe is a kind of pipe used for high-pressure purposes. It is mainly manufactured by electrofusion welding process and belongs to a grade in the ASTM A671 standard.

A691 1-1/4CR alloy steel EFW pipe is commonly used in high temperature, high pressure and corrosive environments.

ASTM A500 straight seam submerged arc welded steel pipe is a straight seam steel pipe manufactured using the submerged arc welding process, and its standard complies with ASTM A500.

ASTM A513 ERW carbon steel pipe is a straight seam electric resistance welded (ERW) carbon steel pipe produced in accordance with ASTM A513 standards.

EN 10219 S355JRH spiral steel pipe is a high-strength spiral steel pipe produced in accordance with European standard EN 10219.

ASME SA53 Grade B ERW pipe refers to a type of electric resistance welded (ERW) steel pipe produced in accordance with the American Society of Mechanical Engineers (ASME) standard ASME SA53/SA53M.

Welded steel pipes are made by rolling steel plates or steel strips into tube shapes and welding them through a welding process. According to its weld form, it can be divided into straight seam welded pipe and spiral seam welded pipe.

SS330 and SS490 are two types of carbon structural steel in Japanese steel standards, which are usually used to manufacture pipes and structural members. "Long seam submerged arc welded carbon pipe" refers to carbon steel pipes produced using the straight seam submerged arc welding process.

API 5L X52 is a welded steel pipe for pipelines produced in accordance with the API 5L standard of the American Petroleum Institute. It is mainly used to transport fluid media such as oil and natural gas.

API 5L is a steel pipe standard for the oil and gas industry, mainly used to transport oil, natural gas and other fuels. It has a wide range of applications and its steel pipes can be used in a variety of environments, including high temperature, high pressure and corrosive environments.