6 1/2" Spiral API 4145h Alloy Steel Drilling Tool Non-Magnetic Drill Collar

• Manufacturing Process: Forging
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Grade: 35CrMo AISI 4140 G105
• Name: 6 1/2" Spiral API 4145h Alloy Steel Drilling Tool
• Model NO.: 6 1/2" Spiral API 4145h Alloy Steel Drilling Tool
• Size: 6 1/2" Spiral API 4145h
• Color: Blue
• Packing: Box
• Transport Package: Standard Export Package
• Specification: 2 3/8 2 7/8 3 1/2
• Trademark: SEACO
• Origin: Shandon China
• HS Code: 84314310
• Production Capacity: 100t

Product Description

spiral API 4145H and alloy steel drilling tool non-magnetic drill collar manufacturer

Product Description

 The drill collars are made of modified AISI 4145H chromium molybdenum alloy steel. These drill collar bars are full-length heat treated and water quenched to obtain ASTM A-370 mechanical properties. Full mechanical and chemical mill test certifications are supplied with all drill collars. These mill test certifications guarantee a hardness range of 285 to 341 BHN and an impact value of 40 ft.-lbs. at room temperature one inch below the surface.

Size	O.D(mm)	I.D.(mm)	Code	Thread	Length(mm)	Weight(kg)
3-1/8	79.4	31.8(1-1/4)	NC23-31	NC23	9140	298
3-1/2	88.9	38.1(1-1/2)	NC26-35	NC26	9140	364
4-1/8	104.8	50.8(2)	NC31-41	NC31	9140/9450	474/490
4-3/4	120.6	50.8(2)	NC35-47	NC35	9140/9450	674/697
5	127	57.2(2-1/4)	NC38-50	NC38	9140/9450	725/749
6	152.4	57.2(2-1/4)	NC44-60	NC44	9140/9450	1125/1163
		71.4(2-13/16)	NC44-60		9140/9450	1022/1056
6-1/4	158.8	57.2(2-1/4)	NC44-62	NC44	9140/9450	1237/1279
		71.4(2-13/16)	NC46-62		9140/9450	1134/1172
6-1/2	165.1	57.2(2-1/4)	NC46-65	NC46	9140/9450	1352/1398
		71.4(2-13/16)	NC46-65	NC50	9140/9450	1249/1291
6-3/4	171.4	57.2(2-1/4)	NC46-67	NC46	9140/9450	1471/1521
7	177.8	57.2(2-1/4)	NC50-70	NC50	9140/9450	1597/1651
		71.4(2-13/16)	NC50-70		9140/9450	1494/1545
7-1/4	184.2	71.4(2-13/16)	NC50-72	NC50	9140/9450	1625/1680
7-3/4	196.8	71.4(2-13/16)	NC56-77	NC56	9140/9450	1895/1960
8	203.2	71.4(2-13/16)	NC56-80	NC56/6-5/8REG	9140/9450	2040/2109
8-1/4	209.6	71.4(2-13/16)	6-5/8REG	6-5/8REG	9140/9450	2188/2263
9	228.6	71.4(2-13/16)	NC61-90	NC61	9140/9450	2658/2748
9-1/2	241.3	76.2(2-13/16)	7-5/8REG	7-5/8REG	9140/9450	2954/3054
9-3/4	247.6	76.2(3)	NC70-97	NC70	9140/9450	3127/3234
10	254	76.2(3)	NC70-100	NC70	9140/9450	3308/3421
11	279.4	76.2(3)	8-5/8REG	8-5/8REG	9140/9450	4072/4210

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