Company Products
Ⅰ.Petroleum casing comply with API SPEC 5CT, SY/T 5989
Usages: petroleum & natural gas exploration

No.	Outer dimension in /mm	Wall thickness(mm)	Steelgrade
1	4.5 /Φ114.3	5.21	H40，J55, K55
		5.69	J55, K55
		6.35	J55, K55,N80
		7.37	N80
2	5 /Φ127.0	5.59	J55, K55
		6.43	J55, K55
		7.52	J55, K55 ，N80
		9.19	N80
		11.10	N80
		12.14	N80
3	5.5 /Φ139.7	6.2	H40，J55, K55
		6.98	J55, K55
		7.72	J55, K55,N80
		9.17	N80
		10.54	N80
4	6.625 /Φ168.28	7.32	H40，J55, K55
		8.94	J55, K55,N80
		10.59	N80
		12.06	N80
5	7.0 /Φ177.8	5.87	H40
		6.91	H40，J55, K55
		8.05	J55, K55, N80
		9.19	J55, K55, N80
		10.36	N80
		11.51	N80
		12.65	N80
		13.72	N80
6	7.625 /Φ193.68	7.62	H40
		8.33	J55, K55, N80
		9.52	N80
		10.92	N80
		12.70	N80
7	8.625 / Φ219.08	6.71	J55, K55
		7.72	H40
		8.94	H40，J55, K55
		10.16	J55, K55，N80
		11.43	N80
		12.70	N80
8	9.625 /Φ244.48	7.92	H40
		8.94	H40，J55, K55
		10.03	J55, K55，N80
		11.05	N80
		11.99	N80
9	10.75 /Φ273.05	7.09	H40
		8.89	H40，J55, K55
		10.16	J55, K55
		11.43	J55,K55, N80
		12.57	N80
10	11.75 /Φ298.45	8.46	H40
		9.53	J55, K55
		11.05	J55, K55
		12.42	J55,K55, N80
11	13.375 /Φ339.7	8.38	H40
		9.65	J55 ,K55,
		10.92	J55 ,K55,
		12.19	N80
		13.06	N80

Ⅱ.Line pipes comply with API SPEC 5L and GB/T 9711.2
Usages: line pipes for transporting natural gas , crude oil, finished oil,water,coal slurry and mine powder.

	114.3	141.3	168.3	219.1	273.1	323.9	355.6
3.2					?
3.6
4.0
4.4
4.8
5.2
5.6
6.0
6.4
7.1
7.9
8.7
9.5
10.3
11.1
12.7
13.5
14.3

Note: the biggest wall thickness of steel grade X80 is up to? 12.7mm and X60 is up to 14.3mm.