? ? ? ? ? ?Coal drilling bits / colliery drill bits / minig drilling bits? ???? ? ?? ............................................................................................................................................................................................................................... ? Product Description ? ?PDC bits are the new bits with the characteristics of high wear resistance, high impact resistance, anti-ramps, mud-pack, high penetration rate. After using on site, it proves that PDC bits have advantages in high speed, deep footage, long life, steady work, few accident, good well bore quality when sneaking in hard or soft foundation. Company independently developed the PDC drill bits have reached more than 30 varieties of products to meet the needs of different strata.? ? ? ? ? ?2. Different PDC Insert cutters type for choose on the PDC drill bit: 3.?Details descreption for PDC bits: 4. Dimensions of PDC Drill?Bit

Specification of?PDC Drill Bit?
Item	Size (mm)	Item Name	Size (mm)
Non-coring Drill Bit	42	Coring Drill Bit	65
Non-coring Drill Bit	46	Coring Drill Bit	75
Non-coring Drill Bit	48	Coring Drill Bit	78
Non-coring Drill Bit	56	Coring Drill Bit	94
Non-coring Drill Bit	60	Coring Drill Bit	94
Non-coring Drill Bit	65	Coring Drill Bit	98
Non-coring Drill Bit	75	Coring Drill Bit	100
Non-coring Drill Bit	94	Coring Drill Bit	113
Non-coring Drill Bit	98	Coring Drill Bit	132
Non-coring Drill Bit	100	Coring Drill Bit	133
Non-coring Drill Bit	113	Coring Drill Bit	153
Non-coring Drill Bit	133	Coring Drill Bit	173
Non-coring Drill Bit	143	Multiple-cones Drill Bit	94
Non-coring Drill Bit	153	Multiple-cones Drill Bit	98
Non-coring Drill Bit	156	Multiple-cones Drill Bit	113
Non-coring Drill Bit	216	Multiple-cones Drill Bit	133
Non-coring Drill Bit	243	Anchor Drill Bit	28
Non-coring Drill Bit	312	Anchor Drill Bit	32
Scraper Drill Bit	90	Scraper Drill Bit	133
Scraper Drill Bit	94	Scraper Drill Bit	153
Scraper Drill Bit	113	Scraper Drill Bit	165
Scraper Drill Bit	120	Scraper Drill Bit	190
Scraper Drill Bit	127	Scraper Drill Bit	210

?? We also can design PDC bits according to customer requirements, such as different geology conditions, special strata and so on. ? ? 5. Producing Process for PDC Bits
Production Progress Packaging & Shipping ? ? 5. Certifications? ? Company Information ?Hunan?Diyfia company Purpose: 1. ?High-speed, High-quality, high credibility! 2.?Reliable quality, best service, reasonable price! 3. With 60years production experience, have strong team to ready the service.? 4. Have Quality Guarantee system and after-sale service.? FAQ ? Q1: Are?you?a?manufacturer or?trading?company? A: We?are?a specialized?manufacturer, with 26years experience on export business. ? Q2: What are your main products, and used for? A: Our products include diamond core bits, PDC bits, reaming shells, core barrels, casing, drill rods, SPT equipment, drill rig, mud pumps and other drilling parts. They are mostly used for mineral exploration, geological drilling, geotechnical engineering, building wells drilling and soil sampling. ? Q3: How about the payment, Mini. Quantity and delivery methods? A:1. Payment: T/T, L/C, Western Union, Paypal, ? ?2. Min. order quantity: 1 piece. ? ?3. Transportation: By DHL/TNT/Fedex express, air transportation, sea and train. ? Q4: What's your delivery time?
A: We usually ship between 4 days for bits and 8working days for core barrels. Surface type moslty have stock for immediate shipment. Drilling rig and mud pump machine are stock on hand.
Q5: Does your company belongs Trade Assurance? A: Yes, our company is Trade Assurance. ? Q6: Do you accept sample order? A: Yes sure, please contact us for details. ? Q7: How about discount? A: Price is based on products and order quantity. ? Q8: How does your company control the quality? A: Quality first. In order to guarantee high quality , DIYFIA always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000. To Build good after –sale service system, we draw up the Quality Guarantee accordingly to the industrial standards combining field experience.Pls. see the Quality Guarantee. ? Q9: How you pack the products? A: Paopao inside pack, Carbon box, plastic box, wooden box or according to your requirement. ?? Q10: How about your after-sales service? A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem. Details please see the Quality Guarantee. ? You need more information and price, please do not hesitate to contact us J ? ? ? ? ??