China Mayhew Junior Drill pipe Carbon Steel 2 7/8

Mayhew Junior Drill pipe Carbon Steel 2 7/8" API Reg Drill Rod

Price Negotiable

Price: US$20/pc

MOQ: Negotiable

Delivery Time: Negotiable

Brand: ROSCHEN

Product Description

Mayhew Junior Friction Welded Rod 2 7/8" Shoulder 79mm 2 - 3/8" REG

Advantages:

1, Workmanship: Taper rod with carburize treatment.

2, Tapered drill rods have a tough life, transferring the percussion energy from rock drill to drilling bit and then into the rock. They’re also subjected to high bending stress, not to mention corrosive water in the flushing hole.

Specifcations:

Name	A	B	C	D	E	F	G	H
TOOL JOINTS:1
23/8 API Regular	2-3/8"	3-1/8"	2-5/8"	3	5	3	60° API	1
27/8 API Regular	2-7/8"	3¾	3	3½	5	3	60° API	1¼
3½ API Regular	3½	4¼	3½	3¾	5	3	60° API	1½
4½ API Regular	4½	5½	4-5/8"	4¼	5	3	60° API	2¼
23/8 API Internal Flush	2-3/8"	3-3/8"	2-7/8"	3	4	2	60° API	1¾
27/8 API Internal Flush	2-7/8"	4-1/8"	325/64	3½	4	2	60° API	2-1/8"
3½ API Internal Flush	3½	4¾	41/64	4	4	2	60° API	211/16
23/8 Mayhew Junior	2-3/8"	2¾	221/64	2¼	4	2	60° Mod. API	1½
23/8 Mayhew Regular	2-3/8"	3¼	235/64	3	4	1½	60° Mod. API	1-5/8"
27/8 Mayhew Full Hole	2-7/8"	3¾	33/64	3-3/8"	4	1½	60° Mod. API	2
23/8 Failing Exploration	2-3/8"	231/32	2½	2¾	4	2	60° Mod. API	1½
27/8 Failing Exploration	2-7/8"	3¾	3-1/8"	3¼	4	2	60° Mod. API	1-7/8"
23/8 Hughes Acme Regular	2-3/8"	3-1/8"	219/32	3	4	3-3/8"	29° Acme	1
23/8 Winter Weiss	2-3/8"	3¼	235/64	3	4	1½	60° Mod. API	1½
27/8 Winter Weiss	2-7/8"	37/16	235/64	3	4	1½	60° Mod. API	1½
3½ API Full Hole	3½	4-5/8"	4	3¾	5	3	60° Mod. API	27/16
FLUSH JOINT TAPERED THREAD²
United Geophysical (111/16 OD)	111/16	111/16	1-3/8"	1	6	3	29° Acme	1