• Model NO.：KM-20201016
• Size：17.2~114.3mm
• Thickness：1.6~20mm
• Standards：ASTM A210,ASME A210,SA-210m
• Materials：Grade A1
• Applications：for High, Middle, Low Pressure Boiler Purpose.
• Surfaces：Oils, Varnish, Passivating, Black Painting
• Transport Package：in Bundle or Wooden Cases.
• Specification：17.2~114.3mm
• Trademark：Kingmetal
• Origin：China
• HS Code：73043110
• Production Capacity：1000 Tons Per Month

Seamless, Cold-Finished TubesOutside Diameter
In. (mm)Wall thickness Tolerance %Over (+)Under (-)1 ½ (38.1) and under200Over 1½ (38.1)220

1 Tube Outside Diameter Tolerce

Cold-Finished Seamless TubesOutside Diameter
In. (mm)Permissible Variations In. (mm)Over (+)Under (-)Under 1 (25.4)0.004 (0.1)0.004 (0.1)1 to 1 ½ (25.4 to 38.1), Incl0.006 (0.15)0.006 (0.15)Over 11⁄2 to 2 (38.1 to 50.8), Excl0.008 (0.2)0.008 (0.2)2 to 21⁄2 (50.8 to 63.5), Excl0.010 (0.25)0.010 (0.25)21⁄2 to 3 (63.5 to 76.2), Excl0.012 (0.3)0.012 (0.3)

SA210 A1 Tube Cut Length Tolerance

Cold-Finished Seamless Tubes Outside Diameter,
In.(mm)Cut Length,in.(mm) Over (+)Under (-) All Sizes3⁄16 [5]0 [0] Under 2 (50.8)1⁄8 [3]0 [0] 2 (50.8) and over3⁄16 [5]0 [0] Under 2 (50.8)1⁄8 [3]0 [0] 2 (50.8) and over3⁄16 [5]0 [0] These permissible variations in length apply to tubes before bending. They apply to cut lengths up to and including 24 ft [7.3 m]. For lengths greater than 24 ft [7.3 m], the above over-tolerances shall be increased by 1⁄8 in. [3 mm] for each 10 ft [3 m] or fraction thereof over 24 ft or 1⁄2 in. [13 mm], whichever is the lesser

SA210 A1 Chemical Compositions

Chemical Components (%)GradeCSiMnPSMoCrVA-1≤0.27≥0.10≤0.93≤0.035≤0.035///

Mechanical Properties      GradeTensile
Strength (Mpa)Yield
Strength (Mpa)Elongation
(%)Hardness
(HRB)A-1≥415≥255≥30≤79