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API Product  >> tongs >>Type DB Manual tongs
 
Type DB Manual tong
 
Type DB Manual tong

1.Description
Q 3½-17/90 ( Type DB Manual tongs) is designed for making up or breaking connections of tubular goods, and can handle the pipe sizes from 3½in to 17 in by replacing interchangeable lug jaw or the step of lug jaw, torque of this type is 90kN.m.
    
2.Structural
Type DB togs body is connected with joint pin on the boom and hang over the well rigs through the top ring on the boom,. Try to keep the tongs body in horizontal level by adjusting the balance head and adjustable square head screw. The pipe threads cold be tightened or removed as soon as the steel wire rope which is fastened on the tongs line pip has been pulled firmly after the latch and the lug jaw have been looped and the pipes have been held by the tongs head.

3.Specifications for DB type tongs
Chart for specifications of Type DB Manual tongs:

Type Beckle pipe O.D.    (in) Rated torque
(kN·m)
Q 3½-17/90
( DB type Tongs)
3½-4½,4½-6 90
5-7
6-8¼
8-9⅝
10⅝-11¼
11¾-12¾ 55
13⅜-14⅜
16-17
 
 
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