API 5DP Geological Drill Pipe
- BEILAI
- CHINA
After years of efforts, Beilai has became the a international brand for geological drilling seamless tubes.The main products are developed from steel grade DZ60(45MnMoB) tpo steel grade ZT850 AND ZT950 wire line core drilling pipes(drill pipe, outer pipe and joint). The drilling depth range from 1000m-2000m-4000m-5000m etc
After years of efforts, Beilai has became the a international brand for geological drilling seamless tubes.The main products are developed from steel grade DZ60(45MnMoB) tpo steel grade ZT850 AND ZT950 wire line core drilling pipes(drill pipe, outer pipe and joint). The drilling depth range from 1000m-2000m-4000m-5000m etc.
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 |
