Rotary Kellys

The kellys are made from 4145-modified alloy bars which are quenched and tempered full maintained one inch below the surface at room temperature. All ends and center drive section are machined. The kellys are Precision-trepan to provide true bores. They are drifted to API specification, and all connections are precision-machined and quality-assurance inspected

When ordering or requesting quotations on kellies, please specify:

1. Hexagonal or square Kelly
2. Normal size (see diagram Section G)
3. Bore (see diagram Section E)
4. Size and type of top connection
5. Size and type of bottom connection
6. Top upset OD (seed diagram section C)
7. Bottom upset OD (seed diagram section C)
8. Plain shipping scabbards are available.

	SQUARE KELLYS
	Normal size Available length(ft) (A) Top upset joint Bottom upset Bore(E) Drive section Approx wt. per 40ft(IBS) API box thread left hand OD(C) Right hand conn-ections OD(D) Across Corners (F) Across Flats (G) 3 ½ 40, 42, 46 6 ½ reg. 4 ½ reg. OD (C) NC 38 (3 ½ IF) 4 ¼ 2 ¼ 4437 3 ½ 1320 4 ½ 40, 42, 46 6½ reg 7 ½ 5 ½ NC 46 (4 IF) NC 50(4 ½ IF) 6 -6 ½ 6 ½ 6 ¾ 2 13/16 5500 4 ¼ 1820 4 ½ 40, 42, 46 6½ reg 7 ½ 5 ½ NC 46 (4 IF) NC 50(4 ½ IF) 6 -6 ½ 6 ½ 6 ¾ 2 13/16 5500 4 ¼ 1820 5 ½ 40, 42, 46 6½ reg 7 ¾ NC 56 or 5 ½ IF 7 3 6750 5 ¼ 2780 6 40, 42, 46 6½ reg 7 ¾ 6 ¾ reg. 7 ¾ 3 7625 6 3700

	HEXAGONAL KELLYS
	Normalsize Available length(ft) (A) Top upset joint Bottom upset Bore(E) Drive section Approx wt. per40ft(IBS) API box thread left hand OD(C) Right hand connections OD(D) Across Corners(F) Across Flats(G) 3 ½ 40, 42, 46 6 ½ reg. 4 ½ reg. OD (C) NC 31 (2½ IF) 4 ¼ 1 ¾ 3937 3 ½ 1300 1200 4 ½ 40, 42, 46 6½ reg 7 ½ 5 ½ NC 38 (3 ½ IF) 6 -6 ½ 6 ½ 6 ¾ 2 ½ 4781 4 ¼ 1740 4 ½ 40, 42, 46 6½ reg 7 ½ 5 ½ NC 46(4 IF) NC 50(4 ½ IF) 6 -6 ½ 6 ½ 6 ¾ 2 13/16 3 5900 5 ¼ 2550 5 ½ 40, 42, 46 6½ reg 7 ¾ NC 56 or 5 ½ IF 7 3 6812 6 3040