41 visiting now: 15 France France flag 10 China China flag 7 USA USA flag 2 UK UK flag 1 Ukraine Ukraine flag 1 Germany Germany flag 1 Brazil Brazil flag 1 India India flag 1 Canada Canada flag 1 Sweden Sweden flag 1 Croatia Croatia flag

Highlighted Companies

  • Suzhou Rico Machinery Co., Ltd (China): RICO, a professional CNC machinery company, who integrated research, development and... http://www.ricocnc.com
  • A Hay & Grain Co Inc (USA): involved in international trade import export. At Anderson Hay we offer a wide variety of feed... http://www.anderson-hay.com/

  • Bxj Lubricated Fishing Bumper Sub - China

    price: contact company for price

    Lubricated fishing bumper sub is one of the jars which produce jarring

    force by means of the energy caused by heavy weight objects when moving

    down, its inner chamber is full of hydraulic oil so as to ensure a longer

    service life.The tool is suitable for deep hole and middle deep hole

    operation.With some advantages:Can produce strong one way down jarring

    force, maximum jarring force, continuous down jarring force. Medium

    jarring force;continuous up jar, low-grade jarring force; can release

    fishing tool; can act as constant pressure drill tool, simply structure,

    easy operation, all these make it widely used jarring tool.

    Woking principle

    - Energy conversion in jarring operation

    Jarring downward is made by means of conversion. Rasing drill stem shall make bumper jar to be pull down at a certain height to produce potential energy. Go on raising drill stem, the drill stem has a strain energy due to spring strain. When drill stem is lowered suddenly, the energy stored in drill stem the force the drill stem to move downward in acceleration. When bumper sub reaches a closed position, the above energies at this instant change into a large downward jarring force.

    - Main factors having influenced on jarring force.

    Many factors influence on jarring force.but key factors as follows:

    1. The bigger hanging weight on top drill stem of bumper jar makes a bigger jarring force.

    2. The longer the spring extension of drill stem is when raising drill stem.the bigger the jarring force is.

    3. The longer the stroke of the bumper jar is, the bigger the jarring force of jar is.

    Company Contact:

    • Phone: +

    • Address: No.2999 ,XinYang Road,FengXian District, Shanghai, China

    • Email: Email

    Published date: August 2, 2013 -

    • Business Description: Tianhe Oil Group,originally established in 1973, is a comprehensive

      enterprise of equipment manufacturing and oilfield service providing.

      We're specialized in innovating, manufacturing and sales of drill and

      petroleum extraction tools, equipments and oil field services.

      Tianhe Oil Group is a council member of CPEIA (China Petroleum and Equipment Industry Association), having been confered as a national Hi Tech company. Tianhe is a well known Chinese trademark. We've been certified in compliance with ISO, API, NS 1, and HSE management system,we have now high end machining centers like CNC turning centers from Mazak,all in one MILLTURN center from WFL Millturn Technologies GmbH&Co.KG as well as a wide range of other sophisticated tooling equipments.

      A strong domestic sales network has been established,covering all oilfields of CNPC, SINOPEC and CNOOC. Specifically today, we're exporting to 45 countries around the globe, overseas trading amount has topped over 80% of our business.

    Related listings

    • Flattened Expanded Metal
      Flattened Expanded Metal
      General Metals - Boegger Industrial Limited - China - April 28, 2016 - contact company for price

      Flattened Expanded Metal Serves for Living Field Flattened expanded metal is made by passing standard expanded metal through a cold rolled reducing mill, leaving a flat and smooth surface that is similar to perforated metal. The rolling process makes...

    • Raised Expanded Metal
      Raised Expanded Metal
      General Metals - Boegger Industrial Limited - China - April 28, 2016 - contact company for price

      Raised Expanded Metal for Anti- climb Applications Raised expanded metal is also known as standard expanded metal. Raised expanded metal is made by shearing and stretching the metal sheet with a set of die on a press, creating diamond shaped openings...

    • Sintered Mesh Laminate
      Sintered Mesh Laminate
      General Metals - Honesty & Faith Hardware Products Co., Ltd. - China - April 20, 2016 - contact company for price

      Sintered mesh laminate belongs to high strength porous material. It is made of stainless steel or other alloys. Single layer or multiple layers of woven wire meshes are permanently bonded together by an unique diffusion- bonded technique. Compared wi...

    Safe Trade Tips

    • Ask for business references and check them
    • Use a payment method that offers better protection for all such as Letters of credit and verified professional escrow services. Avoid payments in advance such as money transfers
    • Verify their business via their local Chamber of Commerce
    • Search the internet using their website address, their business name, their phone and fax numbers, and their email addresses to see if you can find any feedback about them.
    • Get to know more about scams to avoid: Internet Crime Complaint Center - International Financial Scams
    • This site is never involved in any transaction, and does not handle payments, shipping, guarantee transactions, provide escrow services, or offer "buyer protection" or "seller certification"