小黄片应用在线看,小黄片在线视频,在线看小黄片,小黄片APP下载大全

油管，套管及天然氣用無縫管

GB/T 9711.2
SY/T 6194

L210  L245
L290  L360

API 5CT

J55 37Mn5
N80 36Mn2V
P110 41MnV5

管線小黄片在线视频

GB/T 9711.1

API 5L

A,B,X42 ,X52,X60,X70

鍋爐、壓力容器，熱交換器化工用無縫管

GB 3087
GB 5310
GB 6479
GB 9948
GB 18248
GB/T 18984

10,20,20G 16Mn,37Mn
12CrMo 12Cr1MoV
15CrMo ,35CrMo,
10MoWVNb
etc

ASTM A53
ASTM A106
ASTM A333
ASTM A334
ASTM A556
ASTM A179
ASTM A192
ASTM A210

GR.A,B,
GR.A,B,C

GR1,GR6

GR.A-1,GR.C

DIN 1629

DIN 17175

St 37.0
St 44.0
St 52.0

St 35.8
St 45.8
17Mn4
15Mo3
13CrMo44

精密結構、汽車零部件用無縫管 
異形小黄片在线视频

GB/T 3639
GB/T 3094
GB/T 8713
GB/T 8162

10 20 35 45 16Mn,
12CrMo,15CrMo
12Cr1MoV,40Mn2,
20CrMo,42CrMo
etc

ASTM A519

1020
1025
1026
1035
1045
4130 etc

DIN 2391

St 35
St 45
St 52

合金小黄片在线视频

ASTM A213
ASTM A209
ASTM A335
ASTM A199

T11 T12 T22 T5 T9
T1 T1a T1b
P11 p22

輸送流體無縫管

GB/T 8163

10，20，25
Q295，Q345， 
Q460 etc