A106B C20 Seamless Honed Tubes ID350*OD370 Pneumatic Cylinder Tubes

Name : honed tubes, honing pipe, hydraulic cylinder tubes, pneumatic cylinder tubes, honed pipe, honing tube, seamless honed steel tube, precision tubes, cold drawn honed tubes, skived tubes, skived and roller burnished tubes, skived pipes, SRB tube, SRB pipe, hydraulic SRB tube, hydraulic cylinder skived tubes Popular standard and steel grade: EN10305-1 E355 E235 E410 E470 C45E DIN2391-1 ST52 ST45 ST52.3 ASTM A519 SAE1020 SAE1045 SAE1026 GB/T 20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn   Application: hydraulic cylinder, pneumatic cylinder,Jack, cylinder barrel Manufacture Method: cold drawn, cold rolled, Hot rolled+Deep Hole Boring  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    Hydraulic & pneumatic tube size and parameters:     Manufacture method Cylinder ID （mm） Length （m） Straightness （mm/m） Tolerance on ID Tolerance on WT Roughness （μm）   Cold drawn 40-420 ≤16M 0.2-0.5 Depends on  requirement ±8% 0.8-1.6   Cold rolled 30-100 ≥14M 0.2-0.5 Depends on requirement ±5% 0.8-1.2 cold drawn- honed 40-420 14M 0.2-0.3 H8-H9 ±8% 0.2-0.8 Cold drawn-skived & burnished 40-300 9M 0.2-0.3 H8-H9 ±8% ≤0.4 Deep hole boring- honed 50-1000 12M 0.2-0.3 H8-H9 ±8% ≤0.8 Deep hole boring- skived 50-300 9M 0.2-0.3 H8-H9 ±8% ≤0.4 Mechanical property:   Final Supply Condition Cold finished （Hard）（BK） Cold drawn and stress-relieved （BK+S or + SR） Hardness HB Parameters T.S obN/mm2 Elongation δ5% T.S obN/mm2 Y.S OsN/mm2 Elongation δ5% 20# (A106B, ST45, E255) ≧550 ≧8 ≧520 ≧375 ≧12 175 45#(CK45) ≧650 ≧5 ≧600 ≧500 ≧10 190 Q345B(ST52, E355) ≧640 ≧5 ≧600 ≧520 ≧15 190 25Mn ≧640 ≧5 ≧600 ≧510 ≧15 195 27SiMn ≧840 ≧5 ≧720 ≧600 ≧10 210 Chemical Properties:   Material C% Mn% Si% S% P% 20# 0.17-0.23 0.35-0.65 0.17-0.37 ≤0.035 ≤0.035 ST45 ≤0.21 ≥0.4 ≤0.35 ≤0.025 ≤0.025 E255 ≤0.21 0.4-1.1 ≤0.35 ≤0.025 ≤0.025 45# 0.42-0.50 0.50-0.80 0.17-0.37 ≤0.035 ≤0.035 Q345B ≤0.20 ≤1.70 ≤0.50 ≤0.035 ≤0.035 E355 ≤0.22 ≤1.6 ≤0.55 ≤0.025 ≤0.025 ST52 ≤0.22 ≤1.6 ≤0.55 ≤0.04 ≤0.04 25Mn 0.22-0.29 0.70-1.0 0.17-0.37 ≤0.035 ≤0.035 27SiMn 0.24-0.32 1.10-1.40 1.10-1.40 ≤0.035 ≤0.035   Tolerance on ID: ID Tolerance for ID  (μm) H7 H8 H9 H10 30 +21 0 +33 0 +52 0 +84 0 >30-50 +25 0 +39 0 +62 0 +100 0 >50-80 +30 0 +46 0 +74 0 +120 0 >80-120 + 35 0 + 54 0 +87 0 +140 0 >120-180 +40 0 +63 0 +100 0 +160 0 >180-250 +46 0 +72 0 +115 0 +185 0 >250-315 +52 0 +81 0 +140 0 +210 0 >315-400 +57 0 +89 0 +170 0 +230 0   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