Kelly bar Info

Usually Interlocking Kelly bar is applied to strong hard rock formation. It adopts six-ribs and several sets drive pressure key welded onto their surface. Also inner keyboards are made from high-tensile steel under special heat treatment.

Application

Bauer / Soilmec/ Casagrande/ Liebherr/ IMT / Mait / Sany /XCMG/ Sunward/ Zoomlion/ TEG or modified small drilling rig.

Materials & Technology

1st-2nd pipe Materials: 27SiMn or 35CrMo undergone quenched-tempered heat treatment.3rd-5th pipe Materials: Q345B undergone quenched-tempered heat treatment.Kelly drive stub Materials: Soid forging with HRC305-335 and tensile strength 1050 Mpa.External pressure key: 35CrMoTi.Kelly spring Materials:60Si2Mn.

Delivery & Package & Shipping time

Delivery time: Normally within 10 working days after get the deposit.

Package & Shipping time: Usually for Kelly bar exported standard wrapped with aluminum film and fixed pallet tray shipped by bulk cargo vessel.

Trade & Payment terms

Trade terms: We offer EXW/FOB/CIF/CIP/DDP...port price.

Payment terms: 30% T/T as deposit, 70% T/T balance payment before shipment.