序号

product         name

product size（mm）

steel grade

standard

outer diameter × wall thickness

1

Seamless steel tubes for low and medium pressure

φ10-219×1.5-40.0

10、20

GB 3087-1999

2

Seamless steel tubes and pipes for high pressure boiler

φ10-219×2.0-40.0

20G、15CrMoG12Cr1MoVG

GB 5310-1995

3

Seamless steel tubes for structural purpose

φ10-219×1.0-40.0

20、35、45、40Cr、27SiMn

GB/T 8162-1999

4

Seamless steel tubes for liquid service

φ10-219×1.0-40.0

10、20

GB/T 8163-1999

5

Seamless steel tubes for pertroleam cracking

φ10-219×1.0-16.0

10、20G、15CrMo

GB/T 9948-88

6

Seamless steel tubes for hydraulic pillar service

φ68-219×6.0-32.0

27SiMn

GB/T17396-1998

7

Seamless steel tubes for high-pressure for chemical fertilizer equipment

φ14-219×1.0-40.0

10、20G、16Mn

GB 6479-2000

8

the external thread pipes for low and medium pressure boiler

φ25-76×1.5-4.0

20

津Q/YB 3029-91

9

Inside diameter required precision seamless steel tube for hydraulic and pneumatic cylinder use

φ90-220×5.0-10.0

10、20、35、45

GB/T 8713-88

10

Seamless steel pipes for tubing and coupling stock

φ48.26-114.3×4.83-12.7

J55、N80、P110、C90、C95

API SPACE 5CT

11

Seamless steel Pipes for Casing and coupling stock

φ114.3-219.08×5.21-22.22

J55、N80

API SPACE 5CT

12

Seamless steel tubes for automotive axle housing

φ76-121×7.0-28.5

45Mn2、40Cr

YB/T 5035-1996

13

Carbon and carbon-manganese steel seamless steel tubes and pipes for ship

φ10-219×1.5-40.0

320、360、410、460、490

GB/T 5312-1999

 14

 Ferrite and Austenite alloy steel seamless steel pipes for boiler, superheater and heat exchanger

 φ10-127×1.5-12.7

 T2、T12、T22

 ASTM A213/A213M

15

seamless steel tubes for hollow sucker rod

φ28-36×5.0-6.0

20CrMo、35 CrMo

津Q/YB 3122-95

16

seamless steel tubes for heat insulating tubing

φ73.03-127×5.5-12.70

J55、N80

API SPACE 5CT

17

seamless steel tubes for perforating gun oil and gas well

φ88.9-127×6.45-12.70

N80、P110

API SPACE 5CT

18

seamless steel tubes for petroleum drill pipe

φ60.3-168.3×6.45-12.70

E、X、G、S

API SPACE 5D

 19

 Seamless steel tubes for gas cylinder

 φ60-219×3.5-7.0

 37Mn、34Mn2V、30CrMo、35CrMo

 GB18248-2000

 20

 Cold-drawn or cold-rolled precision seamless steel tubes

 φ10-200×1.0-12.5

  10、20、35、45

 GB/T3639-2000

 21

 Seamless steel tubes standard use diamond core drilling

  φ28-75×1.25-6

 DZ40(45MnB、50Mn) DZ50(40Mn2、40Mn2Si)

 YB/T5052-1993

 22

 Precisely drawn seamless steel pipes for submersible motor

 φ30.6×10

 40Cr

 Q/12YB3095-2003

 23

 Seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes

 φ10-76×1.5-5

  10

 ASTM A179

 24

 Carbon-steel seamless tubes and pipes for high temperature operation

 φ10-219×1.5-40

 20

 ASTM A106

 25

 Carbon-steel seamless steel tubes and pipes for mechanical engineering

 φ10-219×1.5-40

 1010 1020 1035 1045

 ASTM A519

 26

 Carbon-steel seamless steel tubes and pipes for high pressure boiler

  φ12.7-177.8×2.2-25.4

 ASTM A192/A192M