Description : cold drawn steel pipes, cold drawn tubes are precision tubes with exact tolerance on OD and ID. When hot finished tubes can not meet requirement on OD and ID tolerance, we will cold drawn the hot rolled tubes to get better tolerance. They are also called ready to hone or ready to skive tubes or pipes.
Popular standard and steel grade:
EN10305-1 | E355 E235 E410 E470 C45E |
DIN2391-1 | ST52 ST45 ST52.3 |
ASTM A519 | SAE1020 SAE1045 SAE1026 4140 4130 |
GB/T | 20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn |
Application: hydraulic cylinder, pneumatic cylinder,Jack, cylinder barrel, downhole motor and and all pipes have requirement for tolerance.
Manufacture Method: hot rolled and then cold drawn. (also could be quenched and tempered)
Heat Treating Method/Delivery Condition:
BK | BKS | GBK | NBK | Q+T |
+C | +SR | +A | +N | Q+T |
Cold drawn | Stress relieved | Annealed | Normalized | QUENCHED + TEMPERED |
Parameters:
Manufacture method | Cylinder ID （mm） | Length （m） | Straightness （mm/m） | Tolerance on ID | Roughness （μm） |
Cold drawn | 40-420 | ≤16M | 0.2-0.5 | Depends on requirement | 0.8-1.6 |
cold drawn- honed | 40-420 | 12M | 0.2-0.3 | H8-H9 | 0.2-0.8 |
Cold drawn-skived & burnished | 40-420 | 9M | 0.2-0.3 | H8-H9 | ≤0.4 |
Part of size list (ID*OD)
40*50 | 100*127 | 240*273 | ||
40*55 | 110*130 | 250*266 | ||
50*60 | 120*140 | 250*280 | ||
50*63 | 120*145 | 250*300 | ||
60*70 | 125*140 | 280*323 | ||
60*73 | 125*145 | 280*325 | ||
63*73 | 140*165 | 300*320 | ||
63*76 | 140*168 | 300*356 | ||
70*80 | 150*180 | 320*340 | ||
70*82 | 160*184 | 320*356 | ||
70*85 | 160*194 | 320*370 | ||
80*90 | 170*200 | 350*370 | ||
80*92 | 180*210 | 400*420 | ||
80*95 | 200*216 | |||
80*100 | 200*220 | |||
90*102 | 200*232 | |||
90*105 | 200*245 | |||
100*114 | 220*250 | |||
100*121 | 220*273 |
Компания Wuxi Baiheng Metal Ltd. начала производство гидравлических цилиндров и хромовых стержней / осей в городе Уси еще в 2001 году. Мы в основном производим холодные вытяжные трубы, хонинговальные / шлифовальные трубы, хромированные стержни / оси / стержни, хромированные полые трубы / поршневые стержни и гидравлические цилиндры.
