Shaan'xi Welong Import & Export Co., Ltd

Products

	Kellys

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Include Square Kellys and Hexagonal Kellys

Material :AISI 4142H and AISI 4145 H

Hardness :285-341 BHN (1�below surface)

Impact value :Min 54 J

Condition :Bored and drifted according to API 7 Spec ,with connection machined .

Heavy weight drill pipes :

Material :4145 H Modified Alloy Steel .

Condition: Bored and drifted according to API 7 Spec .

Mechanical property :

3 1/2:-5�OD : Minimum yield strength is 110 000 PSI

5 1/2�6 5/8�D :Minimum yield strength is 100 000 PSI .

Material : AISI 4145 H Modified Alloy Steel

Condition : Bored and drifted according to API Specifications 7.

Mechanical property :

3 1/2:-5�OD : Minimum yield strength is 110 000 PSI

5 1/2�6 5/8�D :Minimum yield strength is 100 000 PSI .

Standard length :36�or 48�

Manufactured from drill collar material and drifted according to API 7 Spec requirements