Tungsten carbide API valve ball & seat

Price: 4.2 USD
Payment Terms: T/T,L/C,WU
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Basic Info.
  • standards: ISO 
  • material: tungsten carbide 
  • Surface: blank or polished 
  • tolerance: blank and finished 
  • color: metal 
  • size: customized 
  • brand: HONGZUAN 
  • hardness: 88-92HRA 
  • Strength: 1600-4400N/mm2 
  • Model No.: YG6 YG8 YG11 K10 K20 K30 
  • Place of Origin: Hunan  
  • Min.Order: 100 Piece/Pieces
  • Means of Transport: Ocean, Air, Land
Supply Capacity
  • Production Capacity: 10000 pairs/month
  • Packing:customized
  • Delivery Date: 21days or so

Tungsten Carbide Ball and Seat API Standards

Tungsten carbide ball & seat, made from virgin raw materials, have high hardness, wear-resistance, corrosion resistance, and resistance to bending. We are able to supply Carbide Balls in various desired material specifications including TC Cobalt, TC Nickel and TC Titanium, and the TC Balls are manufactured as per ISO and Anti-Friction Bearing Manufacturer Association (AFMBA) standards.

Blank balls and finished balls can be both supplied. Standard and non-standard balls are available. 


GradeBinder (Wt %)Density (g/cm3)Hardness (HRA)TRS (≥N/mm²)
GradeAllowable Ball Diameter VariationDeviation From Spherical FormSurface Roughness Arithmetical AverageBasic Diameter ToleranceAllowable Lot Diameter Variation
33 µ"3 µ".5µ"±30 µ"5 µ"

55 µ"5 µ".8 µ"±50 µ"10 µ"

1010 µ"10 µ"1.0 µ"±100 µ"20 µ"

1515 µ"15 µ"1.0 µ"±100 µ"30 µ"

1616 µ"16 µ"1.0 µ"±100 µ"32 µ"

2424 µ"24 µ"2.0 µ"±100 µ"48 µ"

2525 µ"25 µ"2.0 µ"±100 µ"50 µ"

4848 µ"48 µ"3.0 µ"±200 µ"96 µ"

5050 µ"50 µ"3.0 µ"±300 µ"100 µ"

100100 µ"100 µ"5.0 µ"±500 µ"200 µ"

200200 µ"200 µ"8.0 µ"±1000 µ"400 µ"

300300 µ"300 µ"
±1000 µ"400 µ"

500500 µ"500 µ"
±2000 µ"1000 µ"

10001000 µ"1000 µ"
±5000 µ"2000 µ"

20002000 µ"2000 µ"
±5000 µ"4000 µ"

30003000 µ"3000 µ"
±5000 µ"6000 µ"


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Mr. Arris Zhang (manager)
Tel: 86-731-28487117
Mobile: 86-13974173665
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Contact Method
zhuzhou hongtong tungsten carbide co.,ltd
no.86 mingri rd, tianyuan dist, Zhuzhou, Hunan, China (Mainland) / 412007
Fax: 86-731-28421611
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