• Model NO.：YHA 12 1,4-437G
• Bearing Type：Rubber Sealed Journal Bearing
• IADC Code：4-3-7
• Tooth Type：Chisel Inserts Teeth
• Transport Package：Plywood Case,Carton
• Specification：98kg
• Trademark：YINHAI
• Origin：Cangzhou City, Hebei Province, China
• HS Code：8207199000

Basic Info.

Model NO. YHA 12 1/4-437G Bearing Type Rubber Sealed Journal Bearing IADC Code 4-3-7 Tooth Type Chisel Inserts Teeth Transport Package Plywood Case/Carton Specification 98kg Trademark YINHAI Origin Cangzhou City, Hebei Province, China HS Code 8207199000

Product Description

TECH DATA OF YINHAI 12 1/4" BIT 

417,437,447	0.35~0.9	150~70	Extremely soft formation with low compressive strength and high drillability,such as clay,mudstone,cretaceous,gypsum,salinastone,soft shale and soft limestone
517,527	0.35~1.0	140~60	soft formation with low compressive strength ,such as mudstone,gypsum,salinastone,soft shale and soft limestone
537,547	0.45~1.0	120~50	,,, Soft to medium formation with low compressive strength,such as mid-soft shale,mid -soft limestone,mid-soft sandstone and medium formation with harder abrasiveness interbeds
617,627	0.45~1.1	90~50	Mid-hard formation with high compressive strength,such as hard shale,limestone,sandstone,and dolomite
637	0.5~1.2	80~40	Hard formation with high compressive strength,such as sandstone,limestone,dolomite and anhydrite,marble

REAL SHOT  12 1/4"  BITS 








EXHIBITION SHOW 



FAQ:
1.Q:What kind of packing do you have?
   A: Plywood case free of fumigation; Cartons; Packing can be customized.


2.Q:What is your price advantage?
   A:We are 100% factory directly sales,API production process guarantee,Provide customized services for brand processing.
      Reduce the cost of drilling for you, Don't worry about after-sales service.
      Welcome to book a video-call to inspect factory.