4" | 05499400 |
4 1/2" | 05499450 |
5" | 05499500 |
5 1/2" | 05499550 |
6" | 05499600 |
6 1/4" | 05499625 |
6 1/2" | 05499650 |
7" | 05499700 |
Jining Donghong Machinery Co., Ltd
www.dhparts.com
spareparts1960@foxmail.com
dh@dhparts.com
Mobile/WhatsApp: 0086-18954079939
Skype: spareparts1960
API OSHA IADC OPEC RIG ZONE WORLD OIL Drilling Formulas
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