OD:21.3mm-168mm（1/2"-6"）
Standard:
ASTM/ASME 36.10M, API 5L, ASME SA178, JIS3454, JIS3457, DIN17175, DIN17100, DIN1626, BS1387, BS6323, BS10210, EN10217, EN10219, GOST10705-80,etc.
Steel Grade:
API 5L(PSL.1/PSL.2) - Gr. B /X42 / X46 / X52/ X60/ X65M/ X70 etc.
ISO3183 - L245/L290/L320/L360/L415/L485 etc.
ASTM A53 Gr. A, Gr. B
ASTM A106 Gr. A, Gr. B, Gr. C
Application: Structure, electric power transmission tower projects, piling, water, oil & gas pipeline engineering, mechanical industry, municipal projects, roads and its auxiliary facilities, etc.
