DTH Drill Pipe | 71 sizes · API REG / IF / BECO | Shandong Mainrock Group COMPANY

On-site photo: finished DTH drill pipes stacked, pin threads clearly visible — Shot on site: finished drill pipes in stock, with pin threads and wrench flats clearly visible

DTH Drill Pipe — Full Specifications

71 sizes, sorted by diameter; weight is per single pipe

Diameter	Thread	Type	Wall thickness, in / mm	Length	Wrench flats, in / mm	Flats location	Hex, in / mm	Weight, lb / kg
Φ89	2 3/8 API REG	STARTER PIPE	0.75″ / 19	21 ft / 6.4 m	2.5″ / 64	Both Ends	—	485 / 220
Φ89	2 3/8 API REG	PIPE	0.337″ / 9	25 ft / 7.62 m	2.5″ / 64	Both Ends	—	315 / 143
Φ89	2 3/8 API REG	STARTER PIPE	0.5″ / 13	26.6 ft / 8.1 m	3.5″ / 89	Both Ends	—	441 / 200
Φ89	2 3/8 API REG	PIPE	0.5″ / 13	30 ft / 9.14 m	3.5″ / 89	Both Ends	—	491 / 223
Φ102	2 7/8 API REG	STARTER PIPE	0.337″ / 9	21 ft / 6.4 m	3″ / 76	Both Ends	—	313 / 142
Φ102	2 7/8 API REG	STARTER PIPE	0.337″ / 9	21 ft / 6.4 m	3.5″ / 89	Both Ends	—	313 / 142
Φ102	2 7/8 API REG	STARTER PIPE	0.75″ / 19	21 ft / 6.4 m	3.5″ / 89	Both Ends	—	388 / 176
Φ102	2 7/8 API REG	PIPE	0.337″ / 9	25 ft / 7.62 m	3.5″ / 89	Pin Only	3.5″ / 89	421 / 191
Φ102	2 7/8 API REG	PIPE	0.337″ / 9	25 ft / 7.62 m	3″ / 76	Both Ends	—	410 / 186
Φ102	2 7/8 API REG	PIPE	0.337″ / 9	25 ft / 7.62 m	3.5″ / 89	Both Ends	—	410 / 186
Φ102	2 7/8 API REG	STARTER PIPE	0.75″ / 19	26.6 ft / 8.1 m	3.5″ / 89	Pin Only	—	520 / 236
Φ102	2 7/8 API REG	PIPE	0.337″ / 9	30 ft / 9.14 m	3.5″ / 89	Pin Only	3.5″ / 89	489 / 222
Φ102	2 7/8 API REG	PIPE	0.75″ / 19	30 ft / 9.14 m	3.5″ / 89	Pin Only	3.5″ / 89	751 / 341
Φ114	2 7/8 IF	PIPE	0.337″ / 9	20 ft / 6.1 m	3.5″ / 89	Box Only	—	344 / 156
Φ114	3 1/2 IF	PIPE	0.337″ / 9	20 ft / 6.1 m	3.5″ / 89	Box Only	—	344 / 156
Φ114	2 7/8 IF	STARTER PIPE	0.625″ / 16	21 ft / 6.4 m	3.5″ / 89	Both Ends	—	583.7 / 265
Φ114	2 7/8 IF	PIPE	0.337″ / 9	25 ft / 7.62 m	3.5″ / 89	Pin Only	4″ / 102	411.89 / 187
Φ114	3 1/2 API REG	PIPE	0.625″ / 16	25 ft / 7.62 m	3.5″ / 89	Pin Only	4″ / 102	833 / 378
Φ114	3 1/2 API REG	STARTER PIPE	0.75″ / 19	26.6 ft / 8.1 m	3.5″ / 89	Pin Only	—	855 / 388
Φ114	2 7/8 IF	PIPE	0.337″ / 9	30 ft / 9.14 m	3.5″ / 89	Pin Only	4″ / 102	489 / 222
Φ114	3 1/2 API REG	PIPE	0.337″ / 9	30 ft / 9.14 m	3.5″ / 89	Pin Only	4″ / 102	489 / 222
Φ114	3 1/2 API REG	PIPE	0.75″ / 19	30 ft / 9.14 m	3.5″ / 89	Pin Only	4″ / 102	989 / 449
Φ114	3 1/2 API REG	PIPE	0.5″ / 13	30 ft / 9.14 m	3.5″ / 89	Pin Only	4″ / 102	667 / 303
Φ114	3 1/2 API REG	PIPE	0.43″ / 11	35 ft / 10.67 m	3.5″ / 89	Pin Only	4″ / 102	760 / 345
Φ127	3 1/2 API REG	STARTER PIPE	0.375″ / 10	21.6 ft / 6.55 m	3.5″ / 89	Both Ends	—	485 / 220
Φ127	3 1/2 BECO	STARTER PIPE	0.5″ / 13	21.6 ft / 6.55 m	3.5″ / 89	Pin Only	—	551 / 250
Φ127	3 1/2 API REG	PIPE	0.375″ / 10	25 ft / 7.62 m	3.5″ / 89	Pin Only	4″ / 102	562 / 255
Φ127	3 1/2 API REG	PIPE	0.5″ / 13	25 ft / 7.62 m	3.5″ / 89	Pin Only	4″ / 102	630 / 286
Φ127	3 1/2 API REG	PIPE	0.75″ / 19	25 ft / 7.62 m	3.5″ / 89	Pin Only	4″ / 102	907 / 412
Φ127	3 1/2 BECO	PIPE	0.5″ / 13	25 ft / 7.62 m	3.5″ / 89	Pin Only	4.62″ / 117	654 / 297
Φ127	3 1/2 API REG	STARTER PIPE	0.75″ / 19	26.6 ft / 8.1 m	3.5″ / 89	Both Ends	—	980 / 445
Φ127	3 1/2 BECO	STARTER PIPE	0.5″ / 13	26.6 ft / 8.1 m	3.5″ / 89	Pin Only	—	573 / 260
Φ127	3 1/2 API REG	STARTER PIPE	0.75″ / 19	29.6 ft / 8.99 m	3.5″ / 89	Both Ends	—	1086 / 493
Φ127	3 1/2 API REG	PIPE	0.5″ / 13	30 ft / 9.14 m	3.5″ / 89	Pin Only	4″ / 102	756 / 343
Φ127	3 1/2 API REG	PIPE	0.337″ / 9	30 ft / 9.14 m	3.5″ / 89	Pin Only	4″ / 102	837 / 380
Φ127	3 1/2 API REG	PIPE	0.75″ / 19	30 ft / 9.14 m	3.5″ / 89	Pin Only	4″ / 102	1081 / 491
Φ127	3 1/2 BECO	PIPE	0.75″ / 19	30 ft / 9.14 m	3.5″ / 89	Pin Only	4.62″ / 117	1097 / 498
Φ127	3 1/2 BECO	PIPE	0.5″ / 13	30 ft / 9.14 m	3.5″ / 89	Pin Only	4.62″ / 117	773 / 351
Φ127	3 1/2 API REG	STARTER PIPE	0.75″ / 19	31.6 ft / 9.6 m	3.5″ / 89	Both Ends	—	1159 / 526
Φ127	3 1/2 API REG	PIPE	0.5″ / 13	35 ft / 10.67 m	3.5″ / 89	Pin Only	4″ / 102	874 / 397
Φ127	3 1/2 API REG	PIPE	0.75″ / 19	35 ft / 10.67 m	3.5″ / 89	Pin Only	4″ / 102	1264 / 574
Φ127	3 1/2 BECO	PIPE	0.5″ / 13	35 ft / 10.67 m	3.5″ / 89	Pin Only	4.62″ / 117	892 / 405
Φ140	3 1/2 BECO	STARTER PIPE	0.415″ / 11	20.8 ft / 6.3 m	4.5″ / 114	Both Ends	—	621.14 / 282
Φ140	3 1/2 BECO	PIPE	0.415″ / 11	25 ft / 7.62 m	4.5″ / 114	Both Ends	5″ / 127	733.48 / 333
Φ140	3 1/2 BECO	PIPE	0.75″ / 19	25 ft / 7.62 m	4.5″ / 114	Both Ends	5″ / 127	1044 / 474
Φ140	3 1/2 BECO	STARTER PIPE	0.415″ / 11	25.8 ft / 7.82 m	4.5″ / 114	Both Ends	—	685.02 / 311
Φ140	3 1/2 BECO	PIPE	0.415″ / 11	30 ft / 9.14 m	4.5″ / 114	Both Ends	5″ / 127	865.63 / 393
Φ140	3 1/2 BECO	PIPE	0.75″ / 19	30 ft / 9.14 m	4.5″ / 114	Both Ends	5″ / 127	1240 / 563
Φ140	3 1/2 BECO	PIPE	0.75″ / 19	35 ft / 10.67 m	4.5″ / 114	Both Ends	5″ / 127	1433.9 / 651
Φ159	4 BECO	STARTER PIPE	0.5″ / 13	20.8 ft / 6.3 m	4.5″ / 114	Both Ends	—	746.7 / 339
Φ159	4 BECO	PIPE	0.5″ / 13	25 ft / 7.62 m	4.5″ / 114	Both Ends	5″ / 127	867.84 / 394
Φ159	4 BECO	STARTER PIPE	0.5″ / 13	25.8 ft / 7.82 m	4.5″ / 114	Both Ends	—	898.68 / 408
Φ159	4 BECO	PIPE	0.5″ / 13	30 ft / 9.14 m	4.5″ / 114	Both Ends	5″ / 127	1013.2 / 460
Φ159	4 BECO	PIPE	0.75″ / 19	30 ft / 9.14 m	4.5″ / 114	Both Ends	5″ / 127	1447.1 / 657
Φ159	4 BECO	PIPE	0.5″ / 13	35 ft / 10.67 m	4.5″ / 114	Both Ends	5″ / 127	993.39 / 451
Φ159	4 BECO	PIPE	0.75″ / 19	35 ft / 10.67 m	4.5″ / 114	Both Ends	5″ / 127	1678.4 / 762
Φ178	4 1/2 BECO	PIPE	0.75″ / 19	25 ft / 7.62 m	5″ / 127	Pin Only	6″ / 152	1409.7 / 640
Φ178	4 1/2 BECO	PIPE	0.5″ / 13	25 ft / 7.62 m	5″ / 127	Both Ends	6″ / 152	1041.9 / 473
Φ178	4 1/2 BECO	PIPE	1″ / 25	25 ft / 7.62 m	6″ / 152	Both Ends	6.5″ / 165	1442.7 / 655
Φ178	4 1/2 BECO	STARTER PIPE	0.5″ / 13	25.66 ft / 7.82 m	5″ / 127	Pin End / Box End	—	1204.8 / 547
Φ178	4 1/2 BECO	PIPE	0.75″ / 19	30 ft / 9.14 m	5″ / 127	Pin Only	6″ / 152	1671.8 / 759
Φ178	4 1/2 BECO	PIPE	0.5″ / 13	30 ft / 9.14 m	5″ / 127	Pin Only	6″ / 152	1174 / 533
Φ178	4 1/2 BECO	PIPE	0.5″ / 13	30 ft / 9.14 m	5″ / 127	Both Ends	6″ / 152	1200.4 / 545
Φ178	4 1/2 BECO	PIPE	0.75″ / 19	30 ft / 9.14 m	6″ / 152	Both Ends	6.5″ / 165	1702.6 / 773
Φ178	4 1/2 BECO	PIPE	0.75″ / 19	35 ft / 10.67 m	5″ / 127	Pin Only	6″ / 152	1944.9 / 883
Φ178	4 1/2 BECO	PIPE	0.5″ / 13	35 ft / 10.67 m	5″ / 127	Both Ends	6″ / 152	1372.2 / 623
Φ194	5 1/4 BECO	PIPE	0.75″ / 19	25 ft / 7.62 m	6″ / 152	Both Ends	6.5″ / 165	1570.5 / 713
Φ194	5 1/4 BECO	PIPE	0.875″ / 22	25 ft / 7.62 m	5″ / 127	Pin Only	6.5″ / 165	1709.3 / 776
Φ194	5 1/4 BECO	PIPE	0.75″ / 19	30 ft / 9.14 m	6″ / 152	Both Ends	6.5″ / 165	1856.8 / 843
Φ194	5 1/4 BECO	PIPE	0.75″ / 19	30 ft / 9.14 m	6.75″ / 171	Both Ends	—	1876.7 / 852
Φ194	5 1/4 BECO	PIPE	1″ / 25	30 ft / 9.14 m	6″ / 152	Both Ends	6.5″ / 165	2220.3 / 1008

潜孔钻具组合示意：回转动力头 / 主轴承接头 / 钻杆 / 首根钻杆 / 过渡接头 / 冲击器 / 钻头 — Drill string: rotary head → spindle adapter → drill pipe → starter pipe → sub adapter → DTH hammer → DTH bit. The lower row shows the rotary (tricone) bit alternative.

PIPE vs STARTER PIPE

PIPE is the standard drill pipe, joined in strings by length. STARTER PIPE is the first pipe in the hole: shorter, to compensate for the length of the hammer itself, and usually with a thicker wall to withstand abrasion at the collar.

Threads and matching rigs

Common threads are API REG, IF and BECO, from 2 3/8″ to 5 1/4″. The sizes listed match conventional DTH rigs (DM30/45/50/L, T4W, T4BH, RD20 and similar). DTH and tricone drill pipes are supplied from the same series, so pipe, adapter and hammer can be matched to the rig and hole diameter.

Length, wall thickness and thread can be made to order; ask us for sizes not listed.

Need pipe matched to your rig?

Send the rig model, hole diameter and thread, and we will come back within 24 hours with a matching pipe, adapter and hammer package.

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