وحدة حفر الآبار Sany SR 220

SW Kelly Bar ranks as China’s largest professional manufacturing base for Kelly bars. With over 20 years of in-depth technical expertise, we focus on high-performance drilling solutions for deep‑hole and hard‑rock operations. Serving as a major OEM supplier for mainstream drilling rig brands, our full range of products is fully compatible with all well-known global rig models. We also provide a complete portfolio of used drilling rigs, used Kelly bars and integrated drilling tools to meet diverse project demands

Ⅰ Our Advantages

●20+ years of professional concentration

●1000+ sets Kelly bar of annual production

●10000+ sets Kelly bar being in use for jobsite working

●60000+ ㎡ premises for Kelly bar production

●Plentiful stocks and Rapid delivery

●Full range of Kelly bars matched with various drilling rigs

●Authorized OEM supplier of drilling rig manufacturers in china

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Ⅱ Product Main Structure Description：

1 Steel tube

●Seamless alloy tube same ashydro-cylinder

●Much higher nominal loadingtorque of Kelly bars

●Shot Blasting before welding

2 Extermal strips

●Alloy material heat-treated

●High hardness and highabrasion-resistance

●Single length no less than 9m

3 Locking plate

●Alloy material heat-treated

●High hardness and highabrasion-resistance

●Robot cutting

4 Upper guide ring

●Three moving rings

●Wear-resistance

●Impact resistance

5 Drive shell

●Robot cutting and welding

●Intergral arc plate

●High wear resistance

6 Terminal joint

●Robot cutting and welding

●Overlapping of intermal andexternal plates

●Small tendency for cracking

7 Anti-friction plate

●Full-rotating

●Reduce wear on pipe endsand stopper plate

8 Tool joint

●Integral forging with leghth no less than1.2meters

●Significantly reduce weld load


Ⅲ Common Model of Kelly bar

Outer diameter is abbreviated as "D"（mm）

Nominal Legth is abbreviated as "L"（m）

No. of sections is abbreviated as "sec"

Nominal Torque is abbreviated as "NT"(KN.m)

Nominal drilling depth is abbreviated as "ND"( m)

●D:630, L:10 - 25, sec:4/5, NT:600, ND:36-120

●D:575, L:10 - 21, sec:4/5, NT:500, ND:36 – 100

●D:559, L:10 - 21, sec:4/5, NT:500, ND:36 – 100

●D:530, L:10 - 20, sec:4/5, NT:360, ND:36 – 95

●D:508, L:10 -18.7, sec:3/4, NT:280/360, ND:28 – 70

●D:470, L:10 - 25, sec:3/4, NT:280/400, ND:28-95

●D:470, L:10 -16.5, sec:5, NT:280, ND:28-78

●D:440, L:10 -15, sec:3/4, NT:250, ND:28-56

●D:426, L:10 -15, sec:3/4, NT:250, ND:28-56

●D:419, L:10 -15, sec:3/4, NT:250, ND:28-56

●D:406, L:10 -15, sec:3/4, NT:230, ND:28-56

●D:406, L:10 -15, sec:3/4, NT:300, ND:28-56

●D:394, L:10 -16, sec:3, NT:360, ND:28-56

●D:394, L:10 -17, sec: 4, NT:280, ND:28-65

●D:377, L:10 -14, sec:3/4, NT:220, ND:28-54

●D:368, L:10 -14, sec:3/4, NT:220, ND:28-54

●D:355, L:10 -13, sec:3/4, NT:140, ND:28-50

●D:340（343）, L:10 -13, sec:3/4, NT:230, ND:28-50

●D:299, L:10 -13, sec:3/4, NT:140, ND:28-50

★Matched with drlling rigs: XCMG, Zoomlion, Sany,CRRc,Sunward,Yutong,Tysim, jintai, Bauer,Soilmec, Liebherr,Casagrande, Mait,lMT, CMV, etc.


Ⅳ Working on construction sites all over the world

•For the past twenty years, we have been the main supplier of Kelly bars for drilling rig Chinese leading manufacturers. By matching the newly manufactured

drilling rigs, SW Kelly bars follow the China-made rotary drilling rigs and have been sent in bulk to various sites of the world. Currently, there are thousands

of sets of SW Kelly bas in use on construction sites outside China.

•For the past twenty years, we have also been directly customizing Kelly bars for overseas drilling rig users and providing Kelly bars for foreign brand drilling rigs.


Ⅴ Repair Kits & After-Sales Service

●One SW repair kit package includes allcomponents for repair

●Kelly Bar Coding & Maintenance Kit Management

●Plenty of repair kits

●Professional service team