High Quality and Strength Rock DTH Drill Rod for Support DTH Hammer

• After-sales Service: Yes
• Warranty: 1year
• Certification: CE
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: ND75A
• Standard: AISI
• Surface Treatment: Polishing
• Manufacturing Process: Casting
• Material: Carbon Steel
• Length(Less Bit): 1225mm
• Weight: 143.5kg
• Outer Diameter: C165mm
• Connection Thread: API3 1/2"Reg
• Bit Shank: ND75A
• Hole Range: C178-C216mm
• Work Pressure: 1.5-2.8 MPa
• Recommended Rotation Speed: 30-60 R/Min
• Transport Package: Standard Export Packing
• Specification: ND75A
• Trademark: HW
• Origin: China
• Production Capacity: 600 Set/Sets Per Month
• Package Size: 80.00cm * 50.00cm * 30.00cm
• Package Gross Weight: 50.000kg

Product Description

Product Description

 

Our DTH hammer and drill bits are made of high quality alloy steel with advanced heat treatment to assure the good drilling performance and long service life. They are widely used by our customers all over the world.All the products are manufactured as per the international standard and well compatible with the brand of Atlas Copco,Ingersoll-Rand etc.

Product Specification

Ref.	Parts	Weight	Part No	Ref.	Parts	Weight	Part No
01	Top Sub	31.2 Kg	01-SP781-01	09	Piston Case	47 kg	01-SP781-09
02	O"Ring	0.01 Kg	01-SP781-02	10	Guided Sleeve	5.65 kg	01-SP781-10
03	Disc Spring	0.5 Kg	01-SP781-03	11	Check Ring	0.02 kg	01-SP781-11
04	Check Valve	0.65 Kg	01-SP781-04	12	Retainer Ring	1.3 kg	01-SP781-12
05	Spring	0.09 Kg	01-SP781-05	13	Drive Chuck	11.5 kg	01-SP781-13
06	Valve Seat	5.5 Kg	01-SP781-06	14	Drill Bit		01-SP781-14
07	Inner Cylinder	5.5 Kg	01-SP781-07
08	Piston	34.5 Kg	01-SP781-08

Technical Specification

Length(Less bit)	Weight	Outer Diameter	Connection Thread	Bit Shank	Hole Range
1225mm	143.5Kg	C165mm	API3 1/2"REG	ND75A	C178-C216mm
Work Pressure		Recommended Rotation Speed		Air Consumption
/		/		1.8Mpa		2.4Mpa
1.5-2.8 Mpa		30-60 r/min		21m3/min	28m3/min

Product details
The DTH hammer is a component of the DTH drilling tools and belongs to the working device of the DTH drilling tools. DTH hammer is divided into low air pressure DTH hammer, medium air pressure DTH hammer and high air pressure DTH hammer,which are used for blast hole drilling and water well drilling project.

Company Introduction
Jining Hengwang Construction Machinery Co., Ltd. is located in Jining City,Shandong Province.

With an experienced and professional team, we have exported our products to many countries and regions all over the world, especially in the Middle East,Africa and South America.

Our products enjoy a good reputation among our customers.We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.
FAQ

 Q1. Are you manufacturer or trader?
A: We are manufacturer of drilling rig and drilling accessories. Actually, we produce most of the parts in our own factory for better cost and quality control.

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% against copy of B/L. 

Q3. How about your delivery time?
A: Generally, it will take 7 days after receiving your advance payment. The specific delivery time depends 
on the items and the quantity of your order. Sometimes we have some in stock.

Q4. Are you interested in dealership with local company?
A: Yes, we are quite interested in this business. We'd like to cooperate with some local partner to sell more World
machines in local market and supply better service.

Q5. What is your warranty policy?
A: We can supply one year warranty or 2000h for our machines. We will provide parts as free within warranty.
We can send engineer to customer place if big quality problem. We can provide internet or calling service at any time.

Q6. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery

Q7: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them,