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China API 7-1 Drill Collar 127mm-Nc38 AISI 4145h pictures & photos

China API 7-1 Drill Collar 127mm-Nc38 AISI 4145h

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Min. Order / Reference FOB Price
1 piece	US $5000.00/ piece

Local Area:	Shijiazhuang, Hebei, China
R&D Capacity:	OEM, ODM, Other
Payment Terms:	LC, T/T, D/P, PayPal, WesternUnion, Small-amountpayment

Manufacturing Process:	Forging and Integral Heat Treatment
Surface Treatment:	Spray-Paint
Operation Pressure:	Atmospheric Pressure

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Product Description

Product Information
Drill Collar is mainly used for providing drill bit with required drilling pressure, ensuring pull force transmitted to drill pipe and centralize the drill bit. According to API Spec 7-1 specifications, the material quality is 4145H that's after heat-treatment, thread hardening treatment and phosphating to better antiseize. It also can be produced upon customers' requirements.
The parameter of drill collar according to API Spec 7-1 specifications.
Drill Collar ThreadOutside Diameter DInside Diameter dLengthChamfer DiameterReference Bending Strength RatioLDfmminmminmmmmNC31-41(27/8IF)104.84 1/850.829140or9450100.42.43:1NC35-47120.74 3/450.829140or9450114.72.58:1NC38-50(31/2IF)127557.22 1/49140or94501212.38:1NC44-60152.4657.22 1/49140or9450144.52.49:1NC44-60152.4671.42 13/169140or9450144.52.84:1NC44-62158.86 1/457.22 1/49140or9450149.22.91:1NC46-62(4IF)158.86 1/471.42 13/169140or94501502.63:1NC46-65(4IF)165.16 2/457.22 1/49140or9450154.82.76:1NC46-65(4IF)165.16 2/471.42 13/169140or9450154.83.05:1NC46-67(4IF)171.46 3/457.22 1/49140or9450159.53.18:1NC50-67(41/2IF)171.46 3/471.42 13/169140or9450159.52.37:1NC50-70(41/2IF)177.8757.22 1/49140or9450164.72.54:1NC50-70(41/2IF)177.8771.42 13/169140or9450164.72.73:1NC50-72(41/2IF)184.27 1/471.42 13/169140or9450169.53.12:1NC56-77196.87 3/471.42 13/169140or9450185.32.70:1NC56-80203.2871.42 13/169140or9450190.13.02:16 5/8REG209.68 1/471.42 13/169140or9450195.72.93:1NC61-90228.6971.42 13/169140or9450212.73.17:1
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