我們專注于液壓冷拔制造，是行業中的佼佼者。液壓冷拔無縫管是無縫管通過液壓冷拔機拔制的，改變其外形（內徑、外徑、壁厚）及物理性能，以滿足客戶需要。我公司常年生產內徑63-300mm，壁厚4-36mm的液壓冷拔無縫管，內徑橢圓度可以控制在5絲-15絲，壁厚偏差控制在±5%內，內孔光潔度為0.8-1.6um，目前年產量15000T。
部分規格
|
內徑 |
壁厚 |
|
MM |
5 |
6 |
7.5 |
10 |
12.5 |
15 |
17.5 |
20 |
22.5 |
25 |
30 |
|
60 |
|
|
|
|
|
|
|
|
|
|
|
|
63 |
|
|
|
|
|
|
|
|
|
|
|
|
63.5 |
|
|
|
|
|
|
|
|
|
|
|
|
65 |
|
|
|
|
|
|
|
|
|
|
|
|
70 |
|
|
|
|
|
|
|
|
|
|
|
|
75 |
|
|
|
|
|
|
|
|
|
|
|
|
76.2 |
|
|
|
|
|
|
|
|
|
|
|
|
80 |
|
|
|
|
|
|
|
|
|
|
|
|
85 |
|
|
|
|
|
|
|
|
|
|
|
|
88.9 |
|
|
|
|
|
|
|
|
|
|
|
|
90 |
|
|
|
|
|
|
|
|
|
|
|
|
95 |
|
|
|
|
|
|
|
|
|
|
|
|
100 |
|
|
|
|
|
|
|
|
|
|
|
|
101.6 |
|
|
|
|
|
|
|
|
|
|
|
|
107.95 |
|
|
|
|
|
|
|
|
|
|
|
|
114.3 |
|
|
|
|
|
|
|
|
|
|
|
|
120 |
|
|
|
|
|
|
|
|
|
|
|
|
130 |
|
|
|
|
|
|
|
|
|
|
|
|
140 |
|
|
|
|
|
|
|
|
|
|
|
|
140.3 |
|
|
|
|
|
|
|
|
|
|
|
|
150 |
|
|
|
|
|
|
|
|
|
|
|
|
160 |
|
|
|
|
|
|
|
|
|
|
|
|
168.3 |
|
|
|
|
|
|
|
|
|
|
|
|
170 |
|
|
|
|
|
|
|
|
|
|
|
|
180 |
|
|
|
|
|
|
|
|
|
|
|
|
190 |
|
|
|
|
|
|
|
|
|
|
|
|
200 |
|
|
|
|
|
|
|
|
|
|
|
|
210 |
|
|
|
|
|
|
|
|
|
|
|
|
209.5 |
|
|
|
|
|
|
|
|
|
|
|
|
215 |
|
|
|
|
|
|
|
|
|
|
|
|
220 |
|
|
|
|
|
|
|
|
|
|
|
|
228.6 |
|
|
|
|
|
|
|
|
|
|
|
|
230 |
|
|
|
|
|
|
|
|
|
|
|
|
240 |
|
|
|
|
|
|
|
|
|
|
|
|
250 |
|
|
|
|
|
|
|
|
|
|
|
|
260 |
|
|
|
|
|
|
|
|
|
|
|
|
270 |
|
|
|
|
|
|
|
|
|
|
|
|
280 |
|
|
|
|
|
|
|
|
|
|
|
|
290 |
|
|
|
|
|
|
|
|
|
|
|
|
300 |
|
|
|
|
|
|
|
|
|
|
|
技術要求
執行標準及材質：GB/T3639-2009、GB8713 20#、45#、16Mn、25Mn、27SiMn、30CrMo、40CrMo； DIN2391-2 ST52、ST52.3、ST52.4；EN10305-1 E355、C45E、34CrMo4、42CrMo4； ASTM A519 SAE1020、SAE1026、SAE1045、SAE4130、SAE4140等
精度偏差：
|
內徑橢圓mm |
壁厚偏差 |
外徑偏差mm |
長度m |
直線度mm/m |
內表光潔度um |
|
0.05-0.15 |
±5%~±7% |
±0.30 |
≤13.5 |
0.3 |
0.8-1.6 |
力學性能：
|
交貨狀態
鋼種 |
冷拔（BK） |
冷拔+去應力退火（BK+S） |
硬度HB |
|
抗拉強度T.S
σb N/mm² |
伸長率δ5% |
抗拉強度T.S
σb N/mm² |
屈服強度Y.S
σb N/mm² |
伸長率δ5% |
|
20# |
≥580 |
5 |
≥550 |
≥470 |
≥10 |
175 |
|
45# |
≥645 |
4 |
≥600 |
≥520 |
≥10 |
207 |
|
16Mn |
≥640 |
4 |
≥580 |
≥420 |
≥10 |
190 |
|
25Mn |
≥640 |
5 |
≥600 |
≥520 |
≥14 |
195 |
|
27SiMn |
≥800 |
5 |
≥760 |
≥610 |
≥10 |
230 |
