DIN1630 Seamless Carbon Steel Pipe is designed to meet high-performance requirements. There are no limiting values for the maximum permissible working pressure of these tubes. As one of seamless carbon steel pipe manufacturers and suppliers, World Iron & Steel Co.,Ltd is mainly stock DIN 1630 grade ST 37.4 for a larger inventory, please contact us with:info@worldironsteel.com
OD:30mm~250mm
WT:2mm~30mm
Relevant Material Grade:
10#, 16Mn, Q195-Q345, ST35-ST52, STB35-STB42, 20#, 45#, 16Mn, Q345, ST35, St45, St52, St52.4, STB42, 16Mn, St52,10#-45#, ST35-ST52
Standard: ASTM, DIN, ASTM A1020-2002, DIN 2391
Application: Hydraulic Pipe, Hydraulic cylinder, automobile, oil drilling, textile machinery
Surface Finish: Annealed, Pickled
Steel Grade | Type of deoxidation (RR fully killed) | Chemical composition % by mas | Addition of nitrogen fixing elements (e.g. bot less than 0.020% AI total) | |||||
Symbol | Material number | C max | Si max | Mn | P Max | S Max | ||
ST 37.4 | 1.0255 | RR | 0.17 | 0.35 | ≥0.35 | 0.040 | 0.040 | Yes |
ST 44.4 | 1.0257 | RR | 0.20 | 0.35 | ≥0.40 | 0.040 | 0.040 | Yes |
ST 52.4 | 1.0581 | RR | 0.22 | 0.55 | ≥1.60 | 0.040 | 0.035 | Yes |
1)Average value from three tests; only one individual value may fall short of the specified minimum value by not more than 30%
2)For cold finished tubes in the NBK condition(annealed above the upper transformation point under shielding gas or in a vacuum), minimum values of yield stress lower than these values by 20N/mm2 are permitted.
3)For cold finished tubes in the NBK condition, minimum values of tensile strength lower than these values by 10n/mm2 are permitted.
Package:
1. Bundle package/In bundle with plastic bag outside/ In wooden case
2. Marking as per customer's request
3. Paint on the pipe as per customer request
4. Pipe caps as customer request
5. As per your requirement
