API 7-1 Square & Hexagonal Rotary Kelly (2-1/2"-6")

• After-sales Service: on Site on Line
• Warranty: 12 Months, 12 Months
• Manufacturing Process: CNC Milling
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: kelly
• Surface Treatment: Without Processing
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Grade: E75, K55 N80, 35CrMo AISI 4140 G105
• Transport Package: Standard Export Package, Standard Export Package
• After-Sales Service: on Site on Line
• Specification: 2 3/8 2 7/8 3 1/2
• Trademark: SEACO
• Origin: Shandon China
• HS Code: 84314310
• Production Capacity: 100t
• Package Size: 45.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 20.000kg

Product Description

API 7-1 Square & hexagonal Rotary Kelly (2-1/2"-6")

Product Description

We can manufacture square drill rods and hexagonal drill rods as per requirements of customers. They are made of AISI 4142H-4145H forged or rolled alloy structural steel. Quenching plus tempering thermal treatment will be conducted over the whole length. Its Brinell hardness can reach 285-341 on the basis of such thermal treatment. Charpy impact energy: >or =54J. The formulated process can ensure that the misalignment of the hole reaches the standard wall thickness. Kelly bars are manufactured according to API-7-1 Spec.
Technical Specification:

Kelly Size		Length of Drive Section (m)		Length Overall (m)		Drive Section
		Standard LD	Optional LD	Standard L	Optional L	Across Flats  DFL	Across Corners  EC	Acros Corners  DCC	Radius RC	Radius RCC	Min. Wall  ECC. Boret
63.5	(2 1/2)	11280		12190		63.5	83.3	82.55	7.9	41.3	11.43
76.2	(3)	11280		12190		76.2	100.0	98.43	9.5	49.2	11.43
88.9	(3 1/2)	11280		12190		88.9	115.1	112.70	12.7	56.4	11.43
108.0	(4 1/4)	11280	15540	12190	16460	108.0	141.3	139.70	12.7	69.9	12.07
108.0	(4 1/4)	11280	15540	12190	16460	108.0	141.3	139.70	12.7	69.9	12.07
133.4	(5 1/4)	11280	15540	12190	16460	133.4	175.4	171.45	15.9	85.7	15.88
133.4	(5 1/4)	11280	15540	12190	16460	133.4	175.4	171.45	15.9	85.7	15.88

Kelly Size		Length of Drive Section (m)		Length Overall (m)		Drive Section
		Standard LD	Optional LD	Standard L	Optional L	Across Flats  DFL	Across Corners  EC	Acros Corners  DCC	Radius RC	Radius RCC	Min. Wall  ECC. Boret
63.5	(2 1/2)	11280		12190		63.5	83.3	82.55	7.9	41.3	11.43
76.2	(3)	11280		12190		76.2	100.0	98.43	9.5	49.2	11.43
88.9	(3 1/2)	11280		12190		88.9	115.1	112.70	12.7	56.4	11.43
108.0	(4 1/4)	11280	15540	12190	16460	108.0	141.3	139.70	12.7	69.9	12.07
108.0	(4 1/4)	11280	15540	12190	16460	108.0	141.3	139.70	12.7	69.9	12.07
133.4	(5 1/4)	11280	15540	12190	16460	133.4	175.4	171.45	15.9	85.7	15.88
133.4	(5 1/4)	11280	15540	12190	16460	133.4	175.4	171.45	15.9	85.7	15.88

Detailed Photos