1.Q:How to maintain the Desander ?

A: Clean the screens and check the sealing of slurry pump everyday.

2.Q:why a lot of water come out from screens when desander working?

A: 1.Screens blocked.2.No enough pressure for the cyclone.3.Serious abrasion of cyclone.

3.Q:How to choose desander?

A: Pile diameter below 1M:50m³/h.

Pile diameter 1-1.5M: 100m³/h.

Pile diameter above 1.5M:200m³/h or 250m³/h.

1.Q:How to choose drilling teeth?

A: Strong weathered rock 30 Mpa: Unimate model 950-20*24AAT,

Middle weathered rock 50-60 Mpa: Unimate model 95-22*27AAT,

Weak weathered rock 80-100 Mpa: Unimate model 60-12K-24*31.

2.Q:How often will change the bullet teeth?

A: After drill two piles.

3.Q:How about the tungsten carbide specification?

A: Commonly diameter :19mm,22mm or 24mm.

1-Q:How many piles the pile breaker can cut one day?

  Answer: Square pile: 120 to 160pcs piles per day.

Round pile: 20 to 100pcs piles per day.

2-Q:How to maintain the pile breaker?

Answer:Check if the guide flange bolts is loose or displaced everyday.

Clean the gap between Flange and drill rods with air pump pipe everyday.

3-Q:How to offer hydraulic power for the pile breaker?

Answer:Use excavator or power pack to offer hydraulic power for the pile breaker.

1.Q:What is the advantage of side grip hammer? Why choose it instead of standard excavator mounted vibratory hammer?

Answer: Limit space, no need modify the excavator, no need assistant.

2.Q: What are the advantages of hydraulic impact hammer compared to diesel hammer?

Answer: High efficiency, the conduction efficiency can reach 70% -80%;clean and no pollution.

3.Q: What are the main functions of the vibratory hammer?

Answer: Driving steel sheet pile, casing tube, steel pipe pile, H beam, prefabricated pile, extracting piles.

1.Q:What's the material of wear resistance strip on your drilling tools?

Answer:For hard facing strips, we adopt Hardox 400 or same class wear resistance steel. such as NM500.

2.Q:How do you control the roundness of the cylinder?

Answer:We have the first-class roller machine from "Nantong Teli", Unimate maintain the roundness of the cylinder with a tolerance between 3-5mm.

3.Q:How do you improve the using life of your drilling tools?

Answer:First, we follow Bauer standard to align the drilling bits as an arc shape to minimize the resistance.

Second, We use high end series bullet teeth with USA imported tungsten carbide, its using life is 2-3 times than normal teeth.

Third, by adding the reinforce steel edge for hard formation, it reduced the wall resistance.

Fourth, Central axis adopt 40Cr with heat treatment, Vickers hardness could reach 28 and increase 50% wear resistance.

1.Q:What's the material of your kelly bar's kelly box?

Answer: 35CrMoHardening, integrally forged.withmultiple heat-treatment, with highimpact and fatigue resistance.

2.Q:How about warranty about your kelly bar?

Answer: One year wrranty are provided.

3.Q:How to make sure the kelly bar straightness?

Answer:Each steel tube will be straightened by the straightening line,usually have three times straightening process before and after welding.