Sanjack Tungsten Plated Tubing & Casing

Sanjack Petro manufactures Tungsten plated tubing and Casing in China. We have our own factory of Tungsten plated tubing and Casing. Sanjack Petro provide the high quality and competitive price on Tungsten plated tubing and Casing for you. Contact us now for Tungsten plated tubing and Casing quotation.

  • Sanjack has the most advanced fourth-generation nickel based tungsten plating technology in China.
  • Sanjack is has 7 advanced tungsten plating production lines in China.
  • Sanjack can produce 10,000 tons of various anti-corrosion tubing annually, and plate the ID of 2,000 downhole pump barrels.

Due to the strong carcinogenicity and severe environmental of hexavalent chromium ions, the use of chrome plating technology in China has been gradually limited, and some products have been limited by the two directives, WEEE and ROHS from EU. Therefore, the new environmentally friendly substitution of chromium technology R & D draws more and more attention. And as a new substitution of chromium technology, tungsten alloy plating process, due to its special structure as well as good wear resistance and corrosion resistance, has been gradually focused on by people.

Sanjack is endowed with 7 advanced tungsten plating production lines in China. These environmentally friendly production lines, with high degree of automation, can produce 10,000 tons of various anti-corrosion tubing annually, and plate the ID of 2,000 downhole pump barrels.

Composite-plating is widely used in tubing, sucker rod, sucker rod pump, engine components supplies. Based on the advanced nickel-based technology, Shengji composite plated products take the lead in China and have the following advantages: anti-corrosion, anti-abrasion, rare fouling, strong adhesive.

Key Feature

  1. On plating appearance, no blister or falling happens through the grind & saw test as well as thermal shock test.
  2. Hardness>900HV after heat treatment
  3. Resistance to acid, alkali, chloride ions
  4. Plating appearance adherence kept at 300℃
  5. Plating thickness: 30μm-50μm

Composite plating is based on electroplating and electroless plating , adding nonsoluble particles (such as ceramic particles) into the bath, so that particles can be deposited with the plating. As a result, the plating has the characteristic of both the metal plating and the particles.

Principle of Composite Plating

After two years of intensive research and development, Shengji successfully developed a new type of composite plating technology, which is widely applied in tubing and polished rod surface treatment. At present, related products have realized mass production.

Wear Resistance Comparison

1.Comparison of Nickel-Tungsten Composite Plating and Chromium Plating on Wear Resistance

We verify the wear resistance of Nickel-Tungsten Composite Plating and Chromium Plating through experiments. We prepared two kinds of coating tests, under the specific experimental conditions for friction, to verify the wear resistance.

Test Data for Chrome-plated Specimen Wear Resistance

Test Data for Chrome-plated Specimen Wear Resistance

chrome layer

Test Data for Nickel-Tungsten Composite Plating Block on Wear-resistance

Test Data for Nickel-Tungsten Composite Plating Block on Wear-resistance

Experimental Data and Results

Type of plating

Chrome layer

Nickel tungsten composite

Coefficient of friction

0.54

0.44

Scratch depth (um)

1.86

0.59

Vickers hardness HV0.2

928-950

970-1026

Conclusion

Nickel-tungsten composite plating constitutes at least 3 times better than chrome-plated layer for wear resistance.

 

 

 

  1. 2.Comparison of Nickel-Tungsten Composite Plating and Tungsten Plating on Wear Resistance

We verify the wear resistance of Nickel-Tungsten Composite Plating and Tungsten Plating through experiments. We prepared two kinds of coating tests, under the following experimental conditions for friction, to verify the wear resistance.

Experimental Conditions

Effective Stroke Length

100mm

Speed for Abrasion

100 times /min

Temperature of Service

Room Temperature

Load Pressure

400N

Amount of Test

400 Thousand

 

Experimental results are as follows:

Tungsten plating Experimenta results

Manufacturer of Tungsten Alloy Casing

Tungsten Alloy Casing
Type Size(O.D. ) Plating Parameters
in Mm Layer thickness Hardness CASS
H40         J55          K55                  L80                  N80                  C90                  T95                 P110 4 1/2 114.3 ≥38um 500-550HV(After heat treat:900-1000HV ) No discoloration,pitting,cracks in 96 hours.
5 127
5 1/2 139.7
6 5/8 168.28
7 177.8
7 5/8 193.68
8 5/8 219.08
9 5/8 244.48
13 3/8 339.72
Performance Parameters
Item Parameter
Plating composition Ni, P, W, Carbide (mass fraction)
Plating hardness 50-550HV (plated state), 940-1100HV (heat treatment)
Wear resistance 2-3 times better than chromium plating
Corrosion resistance resistance to aggressive service like H2S, CO2, NaCI, HCI, etc.
Current efficiency 80% -85%
Deposition rate 35um-45um/h
Adhesion 8Kg/mm2, plating no falling under high temperature and pressure.

 

Tungsten Alloy Tubing
Type Size(O.D. ) Plating Parameters
in mm Layer thickness Hardness CASS
NUE        J55         L80         N80       P110 1.9 48.26 ≥38um 500-550HV   (After heat treat:900-1000HV ) No discoloration,pitting,cracks in 96 hours,
2 3/8 60.32
2 7/8 73.02
3 ½ 88.9
4 1/2 114.3
EUE       J55         L80        N80      P110 1.9 48.26
2 3/8 60.32
2 7/8 73.02
3 ½ 88.9
4 1/2 114.3
Performance Parameters
Item Parameter
Plating composition Ni, P, W, Carbide (mass fraction)
Plating hardness 50-550HV (plated state), 940-1100HV (heat treatment)
Wear resistance 2-3 times better than chromium plating
Corrosion resistance resistance to aggressive service like H2S, CO2, NaCI, HCI, etc.
Current efficiency 80% -85%
Deposition rate 35um-45um / h
Adhesion 8Kg/mm2, plating no falling under high temperature and pressure.

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