Model NO.: Cross recessed countersunk head machine screw
Grade: A2-70/A4-70
Length: 6mm-300mm
Tensile Strength: 700 N/mm
Certification: RoHS/Reach
Export Markets: Global
Process: Cold Heading
Trademark: Youjia
Transport Package: Cardboard Boxes+Wooden Pallets
Specification: M3-M24
Origin: Shandong, China (Mainland)
HS Code: 731815909
Model NO.: Cross recessed countersunk head machine screw
Grade: A2-70/A4-70
Length: 6mm-300mm
Tensile Strength: 700 N/mm
Certification: RoHS/Reach
Export Markets: Global
Process: Cold Heading
Trademark: Youjia
Transport Package: Cardboard Boxes+Wooden Pallets
Specification: M3-M24
Origin: Shandong, China (Mainland)
HS Code: 731815909

Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Product Description
Materials:  Carbon steel, Alloy steel, Stainless steel
Surface treatment:  Plain, Black, Zinc Plated(ZP), Yellow Zinc Plated (YZP)and Hot DIP Galvanizing(H. D. G. ), Dacromet.
Grades:  4.8,8.8,10.9,12.9,A2-70,A4-70
Standards:  DIN, ISO,GB, JIS, ASME and ANSI, Non-standard, Custom Drawing.
Certification: ROHS, REACH
Thread:  Metric Coarse, Metric Fine, UNC, UNF, BSW, BSF.
Sizes:  M1.4X3-M20X150, 2#X5/32-3/8X4 inches.
Packing:  Small box/Carton, Cartons Bulk/Pallet, Gunny Bag.



Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw
100% Customer Satisfaction Guarantee
If for any reason you are not completely satisfied with your purchase, simply return it for exchange, replacement, or refund.

FAQ
1. What are your main products?
A: Fasteners,bolts,nuts,screws,washers etc.

2. Do you have a minimum order?
A: No, you can order as much or as little as you need.

3. Do you have a minimum quantity?
A: No, you can buy any quantity.

4. What is your delivery time?
A: It depends on if we have stock or not,if we have stock goods,we can delivery within 3 days after receive the payment.And normally our production time is 20days for one container(20-26 tons) products.

5. What is your payment term?
A: Mostly we use 30% advance payment by T/T,70% before shipment.

6. How is your quality?And what if we don't satisfied with your quality?
A: We produce your order strictly by your request.If the quality is not acceptable,we will refund you.

7. What about the warranty?
A: We are very confident in our products,and we pack them very well to make sure the goods in well protection.
To avoid any subsequent trouble regarding quality issue,we suggest you check the goods once you receive them.If there is any transport damaged or quality issue,please take detail pictures and contact us as soon as possible,we will properly handle it to make sure your loss to reduce to the smallest.
8. Could you send me your catalog and price list?
A: As we have more than thousands of products,it is really too hard to send all of catalog and price list for you.Please inform us the style you interested,we can offer the price list for your reference.



Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Product Description
Materials:  Carbon steel, Alloy steel, Stainless steel
Surface treatment:  Plain, Black, Zinc Plated(ZP), Yellow Zinc Plated (YZP)and Hot DIP Galvanizing(H. D. G. ), Dacromet.
Grades:  4.8,8.8,10.9,12.9,A2-70,A4-70
Standards:  DIN, ISO,GB, JIS, ASME and ANSI, Non-standard, Custom Drawing.
Certification: ROHS, REACH
Thread:  Metric Coarse, Metric Fine, UNC, UNF, BSW, BSF.
Sizes:  M1.4X3-M20X150, 2#X5/32-3/8X4 inches.
Packing:  Small box/Carton, Cartons Bulk/Pallet, Gunny Bag.



Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw
100% Customer Satisfaction Guarantee
If for any reason you are not completely satisfied with your purchase, simply return it for exchange, replacement, or refund.

FAQ
1. What are your main products?
A: Fasteners,bolts,nuts,screws,washers etc.

2. Do you have a minimum order?
A: No, you can order as much or as little as you need.

3. Do you have a minimum quantity?
A: No, you can buy any quantity.

4. What is your delivery time?
A: It depends on if we have stock or not,if we have stock goods,we can delivery within 3 days after receive the payment.And normally our production time is 20days for one container(20-26 tons) products.

5. What is your payment term?
A: Mostly we use 30% advance payment by T/T,70% before shipment.

6. How is your quality?And what if we don't satisfied with your quality?
A: We produce your order strictly by your request.If the quality is not acceptable,we will refund you.

7. What about the warranty?
A: We are very confident in our products,and we pack them very well to make sure the goods in well protection.
To avoid any subsequent trouble regarding quality issue,we suggest you check the goods once you receive them.If there is any transport damaged or quality issue,please take detail pictures and contact us as soon as possible,we will properly handle it to make sure your loss to reduce to the smallest.
8. Could you send me your catalog and price list?
A: As we have more than thousands of products,it is really too hard to send all of catalog and price list for you.Please inform us the style you interested,we can offer the price list for your reference.



Professional Wholesale Cross Recessed Flat Countersunk Head Machine Screw

Biomass Burner

  • Hopper: used to store biomass pellets.
  • Main body of vaporization chamber: biomass particle fuel gasification in gasification chamber
  • Fire mouth (fire mouth): divided into inner tube and outer tube, the inner tube emits combustion gas.
  • Grate: The middle position of the door of the vaporization chamber, used for air distribution when the particles are burned and vaporized.
  • Ash door: The burner must open the door every 2-8 hours of work to clean the ash on the grate. When opening the door, be sure to stop the blower for more than 10 minutes and stand on the side of the door and keep it for more than 2 meters. The safe distance, after the blower stops running, open with a long iron. There is no flame and the combustible gas can be ejected before the door can be cleaned.
  • Blower: Distribution of air for combustion and gasification.
  • Wind box: used to adjust the air volume and air pressure.
  • Bottom wind: From the bottom of the grate.
  • Secondary air: Mezzanine distribution between the inner and outer tubes of the fire vent, and the secondary combustion of combustible gas in the combustion flaring.
  • Feeding motor: screw rod used to drive feeding system.
  • Feeding system: Feed biomass pellets into the combustion chamber.
  • Casters: For short-distance movement of the burner (use a forklift away from the distance to avoid damage to the rigid vibrating refractory layer).
  • Fuel: Pure woody biomass pellet fuel, diameter 8-10MM, length less than 30mm, heating value above 3500KCal, ash content less than 3% (large tonnage burner can burn 30MM biomass briquette fuel).

Biomass Burning Furnace,Burns Particles Furnace,Biomass Granule Burner,Biomass Fuels Furnace

Jinan Shanghangda Machinery Co., Ltd. , https://www.shdmachines.com