Galvanized Seamless Steel Pipe
Galvanized seamless steel pipe Seamless steel pipe has a hollow section and is widely used as a pipeline for conveying fluids, such as oil, natural gas, gas, water and some solid materials.Compared with solid steel such as round steel, the steel tube has the same flexural and torsional strength and lighter weight, so it is an economical section steel.
Galvanized seamless steel pipe
1/8” -24” (10.3mm-609.6mm)
Less than 12m or as your requirements.
Q195 → SS330,ST37,ST42
ASTM A53, BS1387-1985
(I) quality requirements
(1) the chemical composition of steel: steel chemical composition is one of the most important factors affecting the performance of seamless steel pipe, is also the development of rolling pipe process parameters and steel pipe heat treatment process parameters of the main basis.
A. Alloying elements: intended for use
B. Residual elements: steel-making and proper control
C. Harmful elements: strictly control (As, Sn, Sb, Bi, Pb), gas (N, H, O)
Outside furnace refining or electroslag remelting: improve the uniformity of chemical composition and purity of steel, reduce non-metallic inclusion in pipe billet and improve its distribution.
(2) geometric size accuracy and shape of steel pipe
A. Outer diameter accuracy of steel tube: depends on the method of fixing (reducing) diameter, equipment operation, process system, etc.