Company main product is seamless steel tube and welding steel tube two kinds big
  carbon steel seamless steel tube:
1. General purpose seamless steel tube ASTM A53 GR. B, GangHao: SA53 B, specification: a quarter-28, 13.7 711.2 mm
2. Hot work with seamless steel tube ASTM A106 GR. B, GangHao: SA106B, specifications: a quarter-28, 13.7 711.2 mm
3.API SPEC 5L,:BX42X46X52,:1/4"-28",13.7-711.2mm
4.ASTM A106/A53/API 5L GR.B,: B,:1/4"-28",13.7-711.2mm
5. The heat exchanger and with low carbon steel tube condenser of seamless ASTM A179, specifications: 3/4 1
6.-40-101 low temperature homework with seamless steel tube ASTM A333, GangHao: GR. A, GR. 1, GR. 6, GR. 7, GR. 3, the specification: A quarter-28, 13.7 711.2 mm
7. German standard DIN2448/1629 seamless steel tube, GangHao: St37, St44, St52, specifications: a quarter-28, 13.7 711.2 mm
8. Heat resistant steel seamless steel tube (hot strong tube) DIN17175-1979, GangHao: carbon structural steel St35.8-St45.8 / I, St35.8-St45.8 / III, alloy steel and Mo3 15, CrMo44 13, 10 CrMo910, specifications: a quarter-28, 13.7 711.2 mm
9. Structure with seamless steel tube GB/T8162-1999, GangHao: 10 # 20 # 35 # 45 # 16 Mn (Q345), the specification: 6-720 * 1-70 mm
10. The transmission fluid with seamless steel tube GB/T8163-1999, GangHao: 10 # 20 # 16 Mn (Q345), the specification: 6-720 * 1-70 mm
11. Low medium voltage boiler tube GB3087-1999, GangHao: 10 # # 20, specifications: 6-720 * 1-70 mm
12. High pressure boiler tube GB5310-1995, GangHao: 20 G, specifications: 6-720 * 1-70 mm

Carbon steel welding steel tube
1. The American standard ERW hf hanguan ASTM A106 A53, specifications: 1/2-24, 21.3 609.6 mm
2. The British standard ERW hf hanguan BS1387, specifications: 1/2-12, 21.3 323.8 mm
3. Cars with electric welding steel tube shaft GB9947-88 YB/T5209-2000
4. Belt conveyor roller with electric welding steel tube