4145h Mod Od 4 Inch Spiral Heavy Weight Drill Pipe

• Customization: Available
• After-sales Service: Technical/Sample/Quality
• Manufacturing Process: Forging
• Model NO.: 4145H
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Threads 1: Nc38
• Threads 2: Nc40
• Threads 3: Nc46
• Threads 4: Nc50
• Threads 5: 5 1/2 Fh
• Threads 6: 6 5/8 Fh
• Transport Package: Steel Frame
• Specification: 3-1/2 OD to 6-5/8
• Trademark: SHUNFU
• Origin: China

Product Description

Product Description

Heavy Weight Drill Pipe 
 

Integral Heavy Weight Drill Pipes

Heavy Weight Drill Pipes are machined from 31ft bars of AISI 4145H Mod. alloy steel,full-length quenched and tempered to obtain the API Spec. 7-1, NS-1 and Ds-1 mechanical properties.All Heavy Weight Drill pipe bars are trepanned and inside diameters are gauged to APISpec.7-1 specification with a 10 ft drifts mandrel
 

Welded Heavy Weight Drill Pipes

Welded Heavy Weight Drill Pipes consists of two tool joints and one central tube, assembled by welding.Tool joints are made from AlS1 4145H Mod. alloy steel, quenched and tempered to obtain the AP1 Spec.7-1.NS-1 and Ds-1 mechanical properties. Central tube is made from 1340 normalized steel to achieve APISpec.7-1 NS-1 and DS-1 mechanical properties.Each weld zone is fully ultrasonic inspected and hardness tested.
 

Spiral Heavy Weight Drill Pipes

Heavy Weight Drill Pipes are machined from 31ft bars of AISI 4145H Mod. Alloy steel full-length quenched and tempered to obtain the API Spec.7-1, NS-1 and Ds-1 mechanical properties.
 

QUALITY CONTROL

When delivered each HWDP has been inspected according to APISpec.7-1, NS-1 and Ds-1.
An inspection certificate is provided including mechanical properties, chemical analysis and inspections.
Each weld zone is fully ultrasonic inspected and hardness tested.
 

CONNECTIONS

APl relieve groove pin and bore back box stress relief features are standard.Thread roots are cold-worked to improve fatigue resistance of the connection. All connections are phosphatized and coated with AP1thread compound to prevent corrosion and galling. Standard pressed steel protectors are installed to ensure adequate thread protection. On request, High Torque connections can be manufactured.Heavy Weight Drill Pipes can also be delivered blank ended.
 

HARDBANDING

To optimize wear resistance, Hardbanding is standard on tool joints and central upset
Standard wear bands:
One 4" wear pad on pin and box, plus 1" pad on box taper section (optional 
Two 3" wear pads on central upsets (optional for Spiral HWDP).
Standard hardbanding is raised (1/8" oversize).
Flush application available on request (optional)
Type of hardbanding is according to customer's requirements.
We offer the main following hardbanding types:
Fine grain size tungsten carbide particles
Duraband NC (Postle Industries)
Tuffband NC (Postle Industries)
Arnco 100XT
Arnco 300XT
Other hardbanding types can be provided, on request.
 

INTERNAL COATING

Internal coating can be provided on request.
* Note: NS-1 and DS-1 properties and certification are provided on request.Please specify your needs in your enquiry.
 

Nominal Size OD inches	Pipe Body Tube ID Inches	Pipe Body Elevator Upset inches	Pipe    Body Central   Upset inches	Pipe   Body Torsional Strength    ft-lbs	Pipe    Body   Tensile Strength     lbs	Tool Joints OD inches	Tool Joints D inches	Tool Joints Connections		Tool Joints Recommended    Make-Up Torque ft-lbs	Tool Joints Torsional Strength ft-lbs	Tensile Strength lbs	Approx Weight Standard  lbs	Approx Weight Standard Kg	Approx Weight Spiral lbs	Approx Weight Spiral    Kg
								Preferred	Other
3 1/2	2 1/16	3 7/8	4	39157	690800	4 3/4	2 1/16	NC38	3 1/2 IF	11500	19170	852740	785	356	915	415
3 1/2	2 1/16	3 7/8	4	39157	690800	5	2 1/16	NC38	3 1/2 IF	16700	26700	852740	810	367	941	427
3 1/2	2 1/4	3 7/8	4	39157	690800	4 3/4	2 1/4	NC38	3 1/2 IF	11500	19170	852740	785	356	915	415
3 1/2	2 1/4	3 7/8	4	39157	690800	5	2 1/4	NC38	3 1/2 IF	16070	26780	852740	810	367	941	427
4	2 1/2	4 3/16	4 1/2	55272	815000	5 1/4	2 1/2	NC40	4 FH	16600	24400	728670	917	416	1050	476
4 1/2	2 3/4	4 11/16	5	81400	1096100	6 1/4	2 3/4	NC46	4 IF	26600	39.860	1052760	1260	572	1390	630
4 1/2	2 13/16	4 11/16	5	80196	1066000	6 1/4	2 13/16	NC46	4 IF	25800	38570	1020000	1232	559	1407	638
5	3	5 1/8	5 1/2	112900	1382000	6 5/8	3	NC50	4 1/2 IF	34520	52430	1278.200	1535	696	1732	786
5 1/2	3 5/8	5 11/16	6	1478140	1316100	7	3 5/8	5 1/2FH		37740	61.000	1359200	1627	738	1838	834
5 1/2	3 7/8	5 11/16	6	130211	1316155	7 1/4	3 7/8	5 1/2FH		36.000	52817	1182515	1509	684	1727	783
5 1/2	4	5 11/16	6	124446	1231112	7 1/4	4	5 1/2FH		33412	48552	1089740	1429	648	1640	744
6 5/8	4	6 15/16	7 1/8	261840	2409570	8	4	6 5/8FH		33.412	48540	1089740	2537	1151	2795	1268
6 5/8	4	6 15/16	71/8	261840	2409570	8 1/4	4	6 5/8FH		33412	48542	1089740	2577	1169	2836	1286

 

Detailed Photos