... 8'' to 5'' Thickness:9.19mm Length:R1,R2,R3 Shijiazhuang LongWay Petroleum Drill Tolls Co., Ltd which found in ... Longway has the reasonable price in the market. API R3-length drilll tubeGrade:G105,E75,S135,X95,R780OD:2-7 ... /8'' to 5''Thickness:9.19mmLength:R1,R2,R3 The detail infermation about our products are as following: ... :5.49-6.71m R2:8.23-9.14 R3:11.58-13.72mproductAPI oil drill pipes, Water well ...