DRILL COLLAR
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- 产品描述
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- Commodity name: DRILL COLLAR
- Commodity ID: 1457329027457634304
In drilling, a drill collar consists of a heavy pipe above the drill bit in a drill string. Remarks：Length is from 10’ to 31’. API Spec7-1, AISI 4145H Alloy Steel or non-magnetic material.
In drilling, a drill collar consists of a heavy pipe above the drill bit in a drill string.
Remarks：Length is from 10’ to 31’. API Spec7-1, AISI 4145H Alloy Steel or non-magnetic material.
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EMAIL：info@nsj-drilling.com
TEL：+86 4536293088
FAX：0453-6293789
POSTCODE：157013
ADDRESS：No.56 Xingye Road, Mudanjiang City, Heilongjiang, China.
©2021 Heilongjiang Northern Shuangjia Drilling Machinery Co., Ltd. Hei ICP No. 16001467-3
