API 7-1 Integral Heavy Weight Drill Pipe/ Hwdp

• After-sales Service: After Sales Service
• Warranty: 6 Months
• Manufacturing Process: CNC Milling
• Surface Treatment: Phosphating
• Operation Pressure: 3000 Psi
• Material: Alloy
• Model NO.: 4" heavy weight drill pipe
• Transport Package: by Bulk
• Specification: 4" heavy weight drill pipe
• Trademark: ZX
• Origin: China
• HS Code: 8481431000
• Production Capacity: 1000 PCS Per Month

Product Description

Heavy Weight Drill Pipes (HWDP)

Technical Features:

The Heavy Weight Drill Pipe is made from one piece of AISI 4145H solid bar, fully heat-treated, all physical properties confirm with API Spec.7 Latest Editions.  The wear-resistance hardbanding is standard on tool joints connections and central upset. Hardbanding is made by an automatic machine after preheating the pipe and is followed by stress relieving.  The Type of handbanding include Iron-Matrix powder alloy, Tungsten Carbide particle, and Arnco 100XT. 
Standard Bands:  one 4" wear band on both pin and box ends, plus one 1" band on 18 degree shoulder of box. Two 3" wear bands on central upsets The hardbanding is completing flush on both joints and 1/8" oversize on the central upset (full flush on request).
Internal Coating: The HWDP could be internally coated with DPC (Equivalent to TK34) as customers request which are able to prevent corrosion and extend life.

Order Instruction: 

• Nominal Size
• Range
• Hardbanding type
• Internal coating if required
• Extra-long tool joints if required
• API Stress relief recess

Nom. Size (in)	Approx. Overall Length (ft)	Tool Joints			Tube				Approx. Weight		Make-up Torque (lb-ft)
		OD (in)	ID (in)	Conn.	Center upset OD (in)	Center upsets end (in)	ID (in)	Center upset length (in)	lb/ft	kg /jts
3 1/2	30.5	4 3/4	2  1/16	3 1/2IF	4	3 5/8	2  1/16	24	25.3	350	11,500
4	30.5	5 1/4	2 1/2	4 FH	4 1/2	4 1/8	2 1/2	24	29.5	410	17,300
4 1/2	30.5	6 1/4	2 13/16	4IF	5	4 5/8	2 13/16	24	41	565	25,500
5	30.5	6 1/2~6 5/8	3	4 1/2IF	5 1/2	5 1/8	3	24	49.3	681	34,000
5 1/2	30.5	7~7 1/4	3 5/8	5 1/2 FH	6	5 11/16	3 5/8	24	55	760	38,000
6 5/8	30.5	8~8 1/4	4	6 5/8 FH	7 1/4	6 3/4	4	24	70	970	55,800