Quality Standard
ASTM A *3 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A**9 Seamless Carbon and Alloy Steel Mechanical Tubing
GB/T***2 Seamless Steel Tubes for Structural Purposes
JIS G***1 Alloy steel tubes for machine purposes
JIS G***4 Carbon steel tubes for general structural purposes
JIS G***5 Carbon steel tubes for machine structural purposes
DIN ***1 Seamless Precision Steel Tubes
EN****5 Steel tubes for precision applications. Technical delivery conditions. Seamless cold drawn tubes
EN ****0: Seamless structural steel pipes

Steel Grade
ASTM A *3: Grade A, Grade B, Grade C, Type F, Type E
ASTM A**9: ********5, ********2, ***5
GB/T***2: *0, *0, *5, *5, *6Mn, *2C rMo, *5CrMo, *2C rl MoV
JIS G***1: SCM **5 TK, SCM **8 TK, SCM **0 TK, SCM **0 TK, SCM **5 TK, SCM **0 TK
JIS G***4: STKM *1A, STKM *2, STKM *3, STKM *4, STKM *5, STKM *6, STKM *7, STKM *8
STKM *9, STKM *0
DIN ***1: St*0Si, St*0A1, St*5, St*5, St*2
EN****5: E**5, E**5
EN ****0: S**5JRH; S**5J0H, S**5J2H; S**5J0H, S**5J2H; S**5NH, S**5NH; S**5NLH, S**5NLH

Size
Outer Diameter:Hot finish: 2" - *0",Cold drawn: 0.**5" - *8"
Wall Thickness:Hot finish: 0.**0" - 4.*0",Cold drawn:0.**5" - 0.**5"
Length: Random Length, Fixed Length, SRL, DRL

Heat treatment
Annealed: Bright annealed, , Spheroidize annealed
Normalized, Stress relieved, Cold finished, Quenched and Tempered
Delivery Condition: BkS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)
Packing:Plastic plugs in both ends, Hexagonal bundles of max. 2,**0kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips
Test:Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield
strength, Elongation), Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc), Exterior Size Inspection.
Mill Test Certificate:EN ****4/3.1B

Thank you

Threeway Steel