EN ISO11961 Geological Drill Pipe
- BEILAI
- CHINA
EN ISO11961 Geological Drill Pipe
Grades: E75,X95, G105, S135
ISO 11961:2008 covers grade E drill pipe and the high-strength grades X, G and S. Beilai produce ISO 11961:2008 Geological Drill Pipe for geological drilling.
Beilai Produce EN ISO11961 Geological Drill Pipe .
Grade | Mpa(Yield Strength) | Mpa(Tensile strength) | (%)Elongation | Note |
R780 | ≥520(Rp0.5) | ≥780 | ≥15(A50) | Standard: JIS G3465-2006 Type and Brand:STMR780 |
E75 | 517~724(Rp0.5) | ≥689 | The requirements of elongation is referred to the standard of cross sectional area of tensile specimen;which can be met only when the material heat treatment method are correct | API 5DP DN EN ISO11961-2009 (European unit co efficient:6.895) [75*6.895=517;135*6.895=931] |
X95 | 655~862(Rp0.5) | ≥724 | ||
G105 | 724~931(Rp0.6) | ≥793 | ||
S135 | 931~1138(Rp0.7) | ≥1000 | ||
ZT380 | ≥380 | ≥640 | ≥14 | GB/T9808-2008 GB/T16950-2014 Drilling 590Mpa Min Yield Strength equivalent to DZ60 |
ZT490 | ≥490 | ≥690 | ≥12 | |
ZT520 | ≥520(Rp0.5) | ≥780 | ≥15(A50) | |
ZT540 | ≥540 | ≥740 | ≥12 | |
ZT590 | ≥590 | ≥770 | ≥12 | |
ZT640 | ≥640 | ≥790 | ≥12 | |
ZT740 | ≥740 | ≥840 | ≥10 | |
ZT850 | ≥850 | ≥950 | ≥14(A50) | |
ZT950 | ≥950 | ≥1050 | ≥13(A50) | |
DZ40 | ≥392 | ≥637 | ≥14 | YB/T5052-93 DZ50: Min Yield strength og 50Kgf mm2 in geological drilling DZ60: Generally 45MnMoB used DZ50: Generally 40Mn2 used |
DZ50 | ≥490(50*9.8=490) | ≥686 | ≥12 | |
DZ55 | ≥540 | ≥735 | ≥12 | |
DZ60 | ≥588(60*9.8=588) | ≥764 | ≥12 | |
DZ65 | ≥637 | ≥784 | ≥12 | |
DZ75 | ≥735 | ≥833 | ≥10 |
