Standard: JIS G 3441
Application of JIS G 3441 Alloy Seamless Steel Tubes:
Pipe ordered under this specification for machinery, automobiles and other machine parts.
Manufacturing Process of JIS G 3441 Alloy Seamless Steel Tubes:
By a seamless process: hot finished and cold finished (with annealed)
Details of JIS G 3441 Alloy Seamless Steel Tubes We can supply:
Manufacture:seamless pipe (hot finished and cold finished)
Size: O.D.: 15.0～114mm W.T.: 2～20mm
Grade: Class1, Class2, Class3
Length: 6M or specified length as required.
Ends: Plain End, Beveled End.
Chemical Composition and mechanical properties JIS G3441 Alloy Seamless Steel tubes:
Grade and Chemical Composition (％)
|Note: 1. Ni as an impurity in various steel pipes does not exceed 0.25%, and Cu does not exceed 0.30%; 2. When the purchaser requests the analysis of the finished product, the allowable deviation is as specified in Table 3 of JIS G0321.|
Tolerance of outside diameter and wall thickness:
Tolerance of OD and W.T
|Division||Tolerance on O.D||Tolerance on W.T|
|Class 1||D＜50m||±0.5 mm||S＜4mm||+0.6mm-0.5mm|
|60mm＞D≥50mm||±0.20mm||Notes: tolerance on each wall thickness shall be rounded off to one decimal place in accordance with rule a JIS Z 8401|
|1. The OD tolerance of hot finish seamless steel pipe according to Class1 2. Quenched and tempered steel pipes according to 4 categories.|
In principle, it should be in manufacturing condition, or a cold finish condition, or an annealing condition. Other heat treatments are available upon request
Appearance for JIS G3441 Alloy Seamless Steel tubes:
The steel pipe shall be straight and the both ends should be cut in perpendicular; there shall be no defects on the surface that are harmful to the use;
When there are special requirements for pipe surface processing, the supplier and the buyer agree.
b.Manufacture method code(hot finished seamless steel pipe: S-H; Cold finished seamless steel pipe: S-C)
c.Dimensions(nominal diameter X nominal wall thickness or outside diameter X wall thickness)
d.Manufacturer's name or its identifying brand
Packing for JIS G3441 Alloy Seamless Steel tubes:
a.Bare pipe, black coating ( customized);
b.6" and below sizes In bundles with two cotton slings, other sizes in loose;
c.Both ends with end protectors;
d.Plain end, bevel end