• After-sales Service：Yes
• Warranty：1year
• Certification：CE
• Standard：AISI
• Surface Treatment：Polishing
• Manufacturing Process：Casting

=== Base Info ===

• Model NO.：ND85A
• Material：Carbon Steel
• Length(Less Bit)：1354mm
• Weight：193kg
• Outer Diameter：C185mm
• Connection Thread：API4 1,2"Reg
• Bit Shank：ND85A
• Hole Range：C198-C254mm
• Work Pressure：1.5-3.3 MPa
• Recommended Rotation Speed：30-60 R,Min
• Transport Package：Standard Export Packing
• Specification：ND85A
• Trademark：HW
• Origin：China
• Production Capacity：600 Set,Sets Per Month

=== Description ===

30-60 r/min

25m3/min

34m3/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,