Categories
Price: | Negotiable/Ton |
---|---|
Trade Terms: | FOB,CFR,CIF |
Min Order: | 3/Ton |
Pay Type: | L/C,T/T,D/P |
Markets: | North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
---|---|
W. T: | 4mm-40mm |
Cross-Section Shape: | Round |
Connection Type: | Seamless |
Standard: | DIN |
Morphology: | Spare Parts for Hydraulic Cylinder |
Type: | Machinery |
Diameter: | 40*4-400*40 |
Material | Chemical composition requirement | ||||
C (%) | Si (%) | Mn (%) | P (%) | S (%) | |
10# | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | 0.030 max | 0.025 max |
20# | 0.17-0.24 | 0.17-0.37 | 0.4-0.7 | 0.030 max | 0.025 max |
35# | 0.32-0.39 | 0.17-0.37 | 0.5-0.8 | 0.030 max | 0.025 max |
45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | 0.030 max | 0.025 max |
Material | Mechanical properties | |||
BK (cold-drawn/hard) | BKW(cold-drawn/soft) | |||
Tensile strength Mpa min |
Elongation % min |
Tensile strength Mpa min |
Elongation % min |
|
10# | 410 | 6 | 375 | 10 |
20# | 510 | 5 | 450 | 8 |
35# | 590 | 4 | 550 | 6 |
45# | 645 | 4 | 630 | 5 |
1. Heat-treating of tubes like annealing, normalizing, stress-relieving can be negotiated for supply. 2. Tubes with other materials like ST52.4 can be negotiated for supply. |
OD mm |
Allowed depth of internal imperfection |
Scratch, indents | |
OD ≤ 63mm | 20um max |
63mm< OD≤ 112mm | 40um max |
OD> 112mm | 50um max |
Designation | Allowed roughness of internal surface | |||||
a | b | c | d | e | f | |
Nominated value | 0.125um | 0.2um | 0.4um | 0.8um | 1.6um | 3.2um |
1. Tolerance can be +25%/-0 2. Roughness of internal surface of cold-drawn seamless tubes should reach " f" , 3.2um-4um |
I. D mm |
Size tolerance and its designation | ||
H8 | H9 | H10 | |
3< I. D≤ 6 | +18um/-0 | +30um/-0 | +48um/-0 |
6< I. D≤ 10 | +22um/-0 | +36um/-0 | +58um/-0 |
10< I. D≤ 18 | +27um/-0 | +43um/-0 | +70um/-0 |
18< I. D≤ 30 | +33um/-0 | +52um/-0 | +84um/-0 |
30< I. D≤ 50 | +39um/-0 | +62um/-0 | +100um/-0 |
50< I. D≤ 80 | +46um/-0 | +74um/-0 | +120um/-0 |
80< I. D≤ 120 | +54um/-0 | +87um/-0 | +140um/-0 |
120< I. D≤ 180 | +63um/-0 | +100um/-0 | +160um/-0 |
180< I. D≤ 250 | +72um/-0 | +115um/-0 | +185um/-0 |