Kellys

- AISI 4145H alloy steel.acc.to API Spec.7 and SY/T6508

   (kelly bars are inspected ultrasonically over full lenght)

- Intermediate frequency induction heat treatment

- OR 20Meter horizontal resistance furnace heat treatment

- High physical properties in length

- Quenched & tempered along its entire length to deliver

   dependability and long service life

- Hardness range 285-341 BHN

- Minimum IZOD impact value of 40 ft-lb

- Famous Intentional TPI applicable

- OEM service

BLUCKEE | 2020

北 京 鸿 运 能 源 装 备 有 限 责 任 公 司
Beijing Lucky Energy Equipment Co., Ltd
Unit 2306 Anzhen Building, 2 An Ding Men Wai Street, 100013, Beijing, China