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Drilling Tools
- Drilling tools
  
  Drilling Tools Manufacturing Routes
  
  Full drilling, fishing, bit and cementing routes organized by tool family and well program needs.
  
  L1-01
  
  Downhole Drilling ToolsBlog insightDownhole Drilling Tools Guide
  
  Drilling Stabilizer Roller Reamer Hole Opener Drilling Mud Motor Drilling Jars Heavy Weight Drill Pipe Drill Collar Drill Pipe
  
  Send RFQ
  
  API / ISOMTCTraceability
  
  L1-03
  
  Cementing Tools
  
  Casing Centralizer Float Shoe, Float Collar & Guide Shoe Cement Head
  
  L1-04
  
  Drill Bits (Tricone & PDC)
  
  Tricone Drill Bit PDC Drill Bit
  
  L1-07
  
  Fishing & Milling Tools
  
  Overshot & Junk Basket Junk Mill & Taper Mill Casing Scraper Fishing Jar (Super / Hydraulic)Bumper Sub Drill Pipe Screen Die Collar
Well Control
- Well control
  
  Well Control & Hose Systems
  
  Pressure-control hardware and flexible service lines grouped for API 6A, 16A and 16C sourcing.
  
  L1-02
  
  Wellhead & Well Control
  
  Casing Head & Tubing Head Blowout Preventer (BOP)Wellhead Christmas Tree Choke & Kill Manifold
  
  Send RFQ
  
  API / ISOMTCTraceability
  
  L1-09
  
  Oilfield Hoses
  
  Drilling Hose BOP Hose Choke & Kill Hose
Casting Division
- Casting division
  
  Casting Division & Forged Parts
  
  Mill rolls and forged shafts grouped for material grade, heat treatment and route review.
  
  L1-05
  
  Mill Rolls (Casting Division)
  
  Work Roll
  
  Send RFQ
  
  API / ISOMTCTraceability
  
  L1-06
  
  Industrial Forgings (Casting Division)
  
  Forged Shafts
Rig Floor
- Rig floor
  
  Rig Floor Handling & Torque Route
  
  Tongs, bucking units, slips, bails and elevators organized for rig-floor load and handling decisions.
  
  L1-08
  
  Pipe Handling Tools
  
  Lifting Bail Casing, Tubing & Drill Pipe Elevators Casing Slip
  
  Send RFQ
  
  API / ISOMTCTraceability
  
  L1-10
  
  Oilfield Tong & Bucking Unit
  
  Bucking Unit Power Tong Manual Tong
Tools
- Tools
  
  Engineering Tools & RFQ Checkers
  
  Selection tools from your final structure, arranged by drilling, well control, rig floor, rolls and forgings.
  
  Selection brief
  
  Prepare A Cleaner RFQ
  
  Use the right checker before sending pressure class, drawing, OD, grade, route and inspection requirements.
  
  Blog insightSpecification Tool Articles
  
  Contact Us Get Quote
  
  Send RFQ
  
  API / ISOMTCTraceability
  
  spec control
  
  General Checkers
  
  Specification Envelope Checker API / ISO Specification Finder
  
  project fit
  
  Oilfield Selectors
  
  Tool Family Selector RFQ Completeness Checker API 6A / NACE Material Class Selector
  
  manufacturing
  
  Shop Route Tools
  
  Oilfield Tong Selector Pipe Handling Tool Selector Grade Selection Calculator Forging Route Selector
Resources
- Blog
- About Us
- Contact Us

Cross-Catalog Specification Envelope Checker

Enter the duty you have to meet. This returns which of China Welong’s ten product lines publish an envelope that covers it, which API or ISO specification governs that line, and where your requirement sits outside what is published. Ranges route an inquiry; they are not stock promises.