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41/2 inch drill bit subs for drill pipes drill collar
- 200 Piece / Pieces per Month
- Tianjin port
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Product Details
| Place of Origin | Hebei, China | Brand Name | keruite | |
| Type | Other, drill sub | Machine Type | Drilling Tool | |
| Certification | API | Material | Carbide | |
| Processing Type | Forging | Use | Well Drilling |
Product Description
1, Standard: SY5200-93 & API
2, Details
MATERIAL | 35LoMu steel ( good quality ) |
Sub crossover 5-1/2 IF Box x 5-1/2 IF Pin | |
REFERENCE | Sub crossover 4-1/2 IF Box x 3-1/2 IF Pin |
Sub crossover 3-1/2 IF Box x 4-1/2 IF Pin | |
Sub crossover NC38 Box x 6-5/8 REG Box | |
Sub crossover NC40 Box x 6-5/8 REG Box | |
Sub crossover NC46 Box x 6-5/8 REG Box | |
Sub crossover NC50 Box x 6-5/8 REG Box | |
Sub crossover NC56 Box x 7-5/8 REG Box | |
Sub crossover NC56 Box x 6-5/8 REG Box | |
Sub crossover NC61 Box x 7-5/8 REG Box |
3, Properties :
Mechanical properties
| Heat treatment conditions | Profile,mm | σ0,2 (mPa) | KCU (J/ cm2) | σB(mPa) | δ5 (%) | ψ % |
| Quench 850 degree, oil. Temper 620 degree , water | 25 | 930 | 78 | 1080 | 12 | 50 |
| Quench 850 degree , oil. Temper 620 degree , water | 25 | 835 | 98 | 980 | 12 | 55 |
Chemical properties
Specific mass: 7850 kg/m3
Forging temperature, degree : start 1220, end 800. Profile to 80 MM annealing w/regrowth, two supercooling, temper
Material hardness: HB 10 -1 = 269 mPa
Stagnations temperature: Ac1 = 730 , Ac3(Acm) = 820 , Ar3(Arcm) = 550 , Ar1 = 380 , Mn = 320
Machining property: in hot-rolled condition at HB 228-235 and σB=560 mPa, K υ s.h.a.=0,7
Welding properties: difficult to weld. Weld procedure: MAW. Heat and post-heat treatment required.
Flake susceptibility: susceptible.
Propensity to temper brittleness: indisposed.
Contact Us
- Cangzhou Creator Drill Equipment Co., Ltd.
- Contact nameCoco Yu Chat Now
- Phone86-0317-3858634
- AddressXicun Town, Cangzhou, Hebei
Product Categories
| Drill subs | Drilling tools | HDD hole openers | New Products |
| PDC bit | Steel tooth tricone bit | Tricone bit |
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