1. STANDARD:  API 5CT,

2. MATERIAL: H40,J55,K55,N80,L80;

3. SIZE:  4 1/2”-20” (114.3mm- 508mm) 139.7mm,177.8mm, 219.1mm,244.5mm, 273.1mm, 339.7mm, 406.4mm, 473.1mm, 508mm

4. LENGTH:  R1,R2,R3 , as per order; THREAD: BTC, LC,STC

5. PRODCTION CAPACITY:  more than 6000 Tons per month.

  Our products are well accepted  all over China including Chinese oil fields and some big power stations .Besides We export large quantity to UAE, Saudi Aribian ,Brasil, Malasia and many other countries , because of our high quality and competitive price.