Ecvv Trade
the pre-existence of Tianhe Petroleum Machinery Joint-Stock Co., Ltd

China Manufacturer with main products: Drilling Tool, Fishing Tools, Such as Stabilzer, Bucking Unit, Drill Collar, Heavy Weight Drill Pipe, Casing Scraper

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Surface Bumper Jar


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Specifications

The DJ type surface bumper jar is a kind of stuck freeing tool for surface down jarring . it is connected with drill stem section, the jarring force is adjusted n surface . Owning some feature such as big jarring force ,easy operation ,make it especially suitable for stuck freeing of keyboard.
 
 
Type
Parameter
DJ46B(4 3/4)
 
DJ70B(7)
 
O.D. (mm)
121(43/4”)
178(7”)
Max.jarring force MN (tf)
0.4(41+/-5)
0.8(80+/-5)
 Sealing pressure Mpa
20(196)
20(196)
Stroke(mm)
1500( 59)
1220(48)
ID
32(11/4)
51(2”)
Threads API
NC38(31/2”)
NC50(41/2”)
Closed length (mm)
3155(124.2”)
3090(121.8”)

Service Process

Service Guarantee

  • Free Service Charge

    ECVV doesn't charge any service fee to Buyers for buying this product.

  • ECVV Supply

    ECVV is responsible for supply, and provides product quality inspection, fund supervision and supply chain services.

  • Product Quality Commitment

    ECVV China Sourcing Agent will assess the reputation and supply ability of the factory and conduct field trips to select the high-quality Chinese factories for buyers.

  • Deposit Service Commitments

    In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

    After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.

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