Project Description

commodity name :   sch40 black painting cold drawn seamless carbon steel pipe 

Manufacturer Datang Steel Pipe CO., LTD
Standard DIN EN ASTM GB JIS AISI
Material 10#-45#,16Mn, st35-st52 ,q345 ,
Heat treatment according to the customer’s aquirement
Specification Outer diameter(mm) wall thickness
30-250mm 2mm-30mm
I.D Tolerance H8-H10
Length according to the customer’s need
ID roughness RA 0.4-0.8
Technology Honed & SRB(SKIVED AND ROLLER BURNISHED )

 

40*50 90*110 140*170 190*215
40*55 95*110 145*170 190*220
50*60 95*115 150*170 190*225
50*65 100*110 150*175 200*220
55*70 100*114 150*180 200*225
60*70 100*115 155*180 200*230
60*75 100*120 160*175 200*245
60*78 100*125 160*180 200*250
63*73 105*125 160*185 220*250
63*75 110*125 160*190 220*270
63*76 110*130 160*195 225*250
63*78 115*130 165*190 240*273
65*80 115*135 165*205 250*290
70*80 120*140 170*200 250*300
70*82 125*140 180*200 260*300
70*85 125*145 180*205 280*323
70*90 125*150 180*210 280*355
75*90 130*150 180*215 300*350
80*92 130*155 180*220 200*213
80*95 130*160 185*205 200*216
80*100 135*160 185*215 250*266
85*100 140*160 185*220 customized

 

90*105 140*165 190*210

Chemical composition of Material:

Steel grade Chemical composition,%
C Si Mn P S Cr
St45 (20#) 0.17-0.24 0.17-0.37 0.35-0.65 0.035 0.035 0.25
ST52(E355) ≤0.22 ≤0.55 ≤1.6 0.025 0.025 0.25
SAE1026 0.22-0.28 0.15-0.35 0.6-0.9 0.04 0.05 /
STKM 13C ≤0.25 ≤0.35 0.3-0.9 0.04 0.04 /
Q345B ≤0.2 ≤0.5 1.0-1.6 0.03 0.03 0.30
CK45 0.42-0.50 0.17-0.37 0.5-0.8 0.035 0.035 0.25

 

ID size ID deviation (mm)
H7 H8 H9 H10
30 +0.0210 +0.0330 +0.0520 +0.0840
>30~50 +0.0250 +0.0390 +0.0620 +0.1000
>50~80 +0.0300 +0.0460 +0.0740 +0.1200
>80~120 +0.0350 +0.0540 +0.0870 +0.1400
>120~180  

+0.0400

 

+0.0630 +0.1000 +0.1600
>180~250 +0.0460 +0.0720 +0.1150 +0.1850
>250~315 +0.0520 +0.0810 +0.1300 +0.2100
>315~400 +0.05270 +0.0890 +0.1400 +0.0230