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Drill pipe gost 7909-56

Drill pipes with internal end joints are used for exploration and core drilling and are manufactured in compliance with GOST 7909-56. Pipe connectors are of the coupling and tool joint type and must be produced from the same grade of steel. Pipes manufactured according to GOST 7909-56 demonstrate high strength and reliability. They are manufactured to be seamless and capable of drilling to a depth of 2000 m.

Outer drill pipe diameter Outer coupling diameter Coupling length (nominal./limit deviation) Coupling weight, kg
 
42

57+0,9

130(+3) 1,4

50

65+1,0-0,7

140(+3)

1,7

63,5

83+1,2-0,8

150(+3)

2,9

Payment method and delivery

The agreed contract covers the terms of manufacturing and the delivery schedule and method for the batch. The invoice is then issued and payment is made by bank transfer. Production begins once cleared payment has been received. The deliverables are shipped by the transport company.

The manufacturing process usually takes about 30 days but depends on the size and complexity of the order.

Delivery is by container and the schedule is established by the freight forwarder.

Drilling pipes and drilling rods from the manufacturer

Drilling pipes and drilling rods from the manufacturer
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