Specifications

Material: AISI 4137 premium alloy steel
Upset style: EU, IEU or IU
Application: 2 3/8" ~ 6 5/8" drill pipes

Tool joints are machined by CNC lathes. All connections are phosphatized, coated with lubricant and provided with thread protectors. All tool joints should be inspected at full length by fluorescence magnetic particle and ultrasonic method. Tool joints are for pipes from 2 3/8" to 6 5/8", grade is E 75, G 105 and S 135; upset style is EU, IEU or IU.

Detail Specification:

Technical specification and parameters for Tool Joint
Tool joint connection	DP nominal weight lb/ft	Steel grade	O.D.(in)	I.D.(in)	Pin tong space(in)	Box tong space(in)	Pin/Box bevel diameter(in)
NC31	10.4	G105	4 1/8	2	7	9	3 61/64
		S135	4 3/8	1 5/8	7	9	3 61/64
NC38	13.3	G105	5	2 7/16	8	10 1/2	4 37/64
		S135	5	2 1/8	8	10 1/2	4 37/64
NC46	16.6	X95	6 1/4	3	7	10	5 23/32
		G105	6 1/4	3	7	10	5 23/32
		S135	6 1/4	2 3/4	7	10	5 23/32
NC50	19.5	X95	6 5/8	3 1/4	7	10	6 1/16
		G105	6 5/8	3 1/4	7	10	6 1/16
		S135	6 5/8	2 3/4	7	10	6 1/16

Benxi Zhengfeng Hardware products co., LTD

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