Precesion Seamless Steel Pipe 

Characteristics of precision seamless pipe:

1. high precision, saving the loss when the quantity of machining users.
2. specifications, a wide range of applications.
3. cold-rolled finished products, high precision, good surface quality and straightness.
4. steel pipe inner diameter can be made hexagonal.
5. steel pipe superior performance, the metal is relatively dense.

Quality Standard of Seamless Steel Pipe:

API 5L Standard Specification for Seamless Line Pipe or Seamless Pipe Line
ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing
ASTM A106 Seamless Carbon Steel Pipes for oil pipeline and gas pipeline transportation
GB/T8162 Seamless Steel Tubes for Structural Purposes
JIS G3441 Alloy steel tubes for machine purposes
JIS G3444 Carbon steel pipes for general structural purposes
JIS G3445 Carbon steel tubes for machine structural purposes
DIN 2391 Seamless Precision Steel Tubes
EN10305 Steel tubes for precision applications. Technical delivery conditions. Seamless cold drawn tubes
EN 10210:Seamless structural steel pipes

Steel Grade of Seamless Steel Pipe:

API 5L: Grade A, Grade B, X42, X46, X52, X56, X60, X65, X70, X80
ASTM A 53: Grade A, Grade B, Grade C, Type F, Type E
ASTM A519: 1010-1045, 4130-4142, 5135
GB/T8162: 10, 20, 35, 45, 16Mn, 12C rMo, 15CrMo, 12C rl MoV
JIS G3441: SCM 415 TK, SCM 418 TK, SCM 420 TK, SCM 430 TK, SCM 435 TK, SCM 440 TK
JIS G3444: STKM 11A, STKM 12, STKM 13, STKM 14, STKM 15, STKM 16, STKM 17, STKM 18
STKM 19, STKM 20
DIN 2391: St30Si, St30A1, St35, St45, St52
EN10305: E235, E355
EN 10210: S235JRH; S275J0H, S275J2H; S355J0H, S355J2H; S275NH, S355NH; S275NLH, S355NLH

Size and Specification of Seamless Steel Pipe: 

Outer Diameter:Hot finish: 2" - 30",Cold drawn: 0.875" - 18"

Wall Thickness:Hot finish: 0.250" - 4.00",Cold drawn:0.035" - 0.875"

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. 2,000kg 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 10204/3.1B

Process of Seamless Steel Pipe:

Reference of Seamless Steel Pipe:

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