DIN2391 SEAMLESS PRECISION STEEL TUBES
Specifications:
Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling
Ends: PE/BE, ends caps
Marking: as per requirement
Delivery Condition: BK / BKW / ANNEALING (GBK/GZF) / NORMALIZING (NBK/NZF)
Size:(mm)
As per standard or as per customer’s requirement
Length: ≤16m. Fixed Length (6m,9m,12m, 16m or as per requirement) or random length
Package: Hexagonal Bundles with steel strips and plastic wrapping outside/Wooden box/Wooden crate/Steel frame/As per customer’s requirement
CHEMICAL COMPOSITION (%):
|
Quality Level |
CHEMICAL COMPOSITION (CAST ANALYSIS) IN% |
||||||
|
Grade |
C≤ |
Si |
Mn |
P≤ |
S≤ |
||
|
A |
St35 |
1.0308 |
0.18 |
− |
− |
0.05 |
0.05 |
|
St45 |
1.0408 |
0.25 |
− |
− |
0.05 |
0.05 |
|
|
St55 |
1.0507 |
≈0.36 |
− |
− |
0.05 |
0.05 |
|
|
St52 |
1.0831 |
0.20 |
≤0.55 |
≤1.5 |
0.05 |
0.05 |
|
|
B |
St35.2 |
1.0309 |
0.17 |
≤0.35 |
≥0.40 |
0.05 |
0.05 |
|
St45.2 |
1.0418 |
0.22 |
0.10~0.35 |
≥0.40 |
0.05 |
0.05 |
|
|
St55.2 |
1.0509 |
≈0.36 |
0.10~0.35 |
≥0.40 |
0.05 |
0.05 |
|
|
St52.2 |
1.0832 |
0.20 |
0.10~0.55 |
≤1.5 |
0.05 |
0.05 |
|
E215 with Al≥0.025
INSPECTION AND TEST:
CHEMICAL COMPOSTION TEST. MECHANICAL PROPERTIES TEST(tensile strength, yield strength, elongation, flaring, flattening/drift expanding, hardness, etc). SURFACE AND DIMENSION CHECK. NON-DESTRUCTIVE TEST(eddy current test/ultrasonic test), HYDRAULIC TEST.
Description:
DIN2391 SEAMLESS STEEL TUBES FOR PRECISION APPLICATIONS. Tubes according to this standards are characterized by having precisely defined tolerances on dimensions and a specified surface roughness. Mainly used for structure, auto, etc.
Top quality products
Applications:
Mainly used in structure, auto, hydraulic and pneumatic power systems.
Competitive Advantage:
Always put quality on first consideration makes us keep our qulity stable and good. Always put customer’s benefit before ours makes our good service and gain us good reputation.
Advanced equipments. Sincere , truth and careful attitude on communication and production.
