Fragility of nitration: Less than grade 1

 Roughness of the surface:Ra 0.4um

 Linearity of the screw:0.015mm

 Chromium-plating layer thickness:0.03-0.08mm

 Hardness of double alloys: HRC55-62

 Depth of double alloys:>2 mm

 The surface hard chromium plating hardness after nitrogenation:>=950HV

 Guarantee: Common Nitrided: approx 2 years     Bimetallic : much longer lifetime

Technical standard:

1.Material: 38C rMoALA

2.Hardness of modulator: HB260-290

3.Hardness of nitrification:800-1050HV

4.Depth of nitrification layer: 0.4-0.7mm

Double-alloy technical standard:

1.Level A - containing tungsten of 40%

2.Level B - containing tungsten of 25%

3.Level C - containing tungsten of 9.5%

4.Hardness of alloy: HRC56-65o

Applied scope of plastic: applied for PVC and WPC material,  has a high output and stable performance.

1.Components of alloy powder: Ni + Co + Cr + W + Si + Fe + B + C

2.Depth of alloy layer: 1.2 mm-2.0 mm

3.Hardness of alloy: HRC>65°

 Two stage type of barrel (material of powder outlet is Cr12MoMV, vacuum quenching)
and screw (powder output is treated by alloy), the using lifespan is long as twice
as common ones.The twin screws and barrel can be equipped in differents

About JIAWEI:

1.rich strength----We have our own professional teams in the sales, design, production, inspection and customer service areas. We concentrate to bring customers the most perfect customer experiences.

2.high-quality products----We adopt a series of advanced production and processing equipments such as CNC machines , Stellite PTA welding machines to ensure the quality of our products.

3.large international market----We do foreign trade more than 5 years, we have a set of mature foreign trade system, our customers are all over the world. We will continue to expand our international market.

4.location advantage----We are located in China’s screw town----Jintang town, Zhoushan city, near to Ningbo Port and Shanghai Port.

5.serious and responsible attitude----Over the years, we always maintain a serious, professional and responsible attitude, make our best efforts to meet customers’ demands.