Technical Parameter of Kellyway Inter-Locking Kelly Bars

Diameter(MM)	Elements	Length(M)	Torque(KN·M)	Max DrillingDepth(M)
355	3&4	8-12	180	42
377/368	3&4	8-13	220	46
406/394	3&4	8-14	230	50
419/426	3&4	8-15	250	54
440/445	3&4	8-15	259	54
470	3&4	8-17	280	62
508	3&4	10-17	320	62
530	3&4	10-20	380	71
575	3&4	10-21	420	75
630	3&4	10-21	460	75
All specifications can be tailored as per customers’ special requirements.

Our Advantages

Seasoned R&D and Manufacturing Teams

All of core R&D, process and manufacturing personnel are from best corporations in the 

industry, with 10 years of experiences in kelly bar design and manufacturing, they are capable 

of designing customized kelly bars and providing technical services for domestic and 

internationally renowned brands on long-term basis.

Top Quality Special Raw Materials of Steel Pipes

The raw materials of the steel pipes for kelly bars we use are selected materials supplied by 

the best manufacturers at home and abroad, with yield strength and life more than twice that 

of generic products, which will meet the strict requirements for the drilling of kelly bars in hard 

stones and various formations.

Most Advanced Production &Manufacturing Process

The key components such as stub, key bar, pressure point are made of imported steel, which 

undergo special heat treatments and surface peening treatments that not only significantly 

improve yield strength, wear resistant, impact resistant and large strain resistant properties, 

but also the welding and corrosion resistant properties, will be built to meet the requirements 

of high-reliability operation of kelly bar in high-torque, large-diameter, and ultra-deep piles.

Kellyway Kelly Bar for All Brands

Kelly bar for Bauer BG25, 394mm*4*14m and Liebherr LB28, 419mm*4*16m

Kelly bar for Casagrande 419mm*4*10m

Kelly bar for Sany 445mm*4*10m

Kelly bar for Mait HR180, 377mm*4*12m

Factory Product Pictures

Packing & Delivery

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