High Quality Oilfield Tubing Couplings Drill Pipe Tool Joints for Petroleum Pipeline Oilfield Drilling Equipment

High Quality Oilfield Tubing Couplings Drill Pipe Tool Joints for Petroleum Pipeline Oilfield Drilling Equipment. We are factory and China Top 10 line pipe manufacturer. We are based in Shandong, China, start from 2014. We have stock of common sizes at hand, so even few ton is accepted. From material to products, we inspect each process to keep good quality. And SGS inspection can be accepted. After you confirm our PI (Proforma Invoice), we will request you to pay. We accept T/T, L/C.