Black Phosphate Drywall Screw

September 08 14:16:00, 2020

  • Model NO.: 12
  • Type: Countersunk Head
  • Connection: Common Bolt
  • Standard: DIN, GB, ANSI, BSW
  • Finish:Black;Plain;Zp;Yzp;Bzp;Wzp...: (3.5, 4.8)
  • Transport Package: 25kgs/Carton Then Europe Pallets
  • Origin: Ningbo Zhejiang
  • Material: Carbon Steel
  • Groove: Cross
  • Head Style: Counter Sunk Bolt
  • Grade: 8.8
  • Trademark: NGL
  • Specification: 3.5, 4.8
  • HS Code: 7318140000

Product Description
Plain Drywall Screw (GB/T 14210-1993)

We are a professional manufacturer of machine screws. We have capabilities to manufacture machine screws in length 
of 1/4" to 8" and diameters of up to M2 to M6.3. Materials of low carbon steel from C1022.
We are able to achieve and fulfill customers' demands. If you have interests in our machine screws or more questions, 
please don't hesitate to contact us.
ASME standards specify a variety of "Machine Screws" in diameters ranging up to 0.75 in (19.05 mm). These fasteners
are often used with nuts as well as driven into tapped holes. They might be considered a screw or a bolt based on the 
Machinery's Handbook distinction. In practice, they tend to be mostly available in smaller sizes and the smaller sizes are 
referred to as screws or less ambiguously as machine screws, although some kinds of machine screw can be referred to 
as stove bolts.



Products name		 Plain Drywall Screw (GB/T 14210-1993)
Standard: DIN,ASTM/ANSI JIS EN ISO,AS,GB
Material Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593
Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9;  SAE: Gr.2,5,8;  ASTM: 307A,307B,A325,A394,A490,A449,
Finishing Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,
Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
Production
Process		 M2-M24:Cold Froging,M24-M100 Hot Forging,
Machining and CNC for Customized fastener
Customized Products
Lead time		 Busy season:15-30days,Slack seaon:10-15days
Stock Products Steel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782
Stainless steel: All DIN Standard stainless steel Bolt
Free Samples for standard fastener
 

Product Description

Ceramic packing balls also named inert Alumina Balls are manufactured from very high quality chemical-porcelain clay materials. According to the different content of Al2O3,the packing Ceramic Ball is divided into: common ceramic ball, Inert Ceramic Ball, medium Alumina Ball , High Alumina Ball and 99% alumina Ball, actived Alumina Ceramic Ball, opening hole ceramic ball, micro porous ceramic ball, heat storage ceramic ball.

Alumina Ceramic Balls Characteristics and advantages

1.High mechanical strength (Monolithic spheres will not split, crack or spall in use)

2.High temperature resistance

3.Lower water absorption

4.Quite excellent chemical stability

5.Can resist corrosion of acid, alkali and other organic solvent

6.Excellent thermal shock resistance (can withstand the temperature urgent changes occurred in production process)

7.Trouble-free reactor filling due to high crush strength

8.Will not plug catalyst bed, optimizing the process efficiency by keeping the pressure drop low and catalyst activity high

9.No contaminate catalyst due to maximize resistance to attrition, extending the catalyst Activity life and reduce the operation cost

alumina Ceramic Balls application:

Inert alumina balls are widely used as the covering or supporting media of the catalyst in the reactors and tower packing in many fields such as petroleum, chemical industry, chemical fertilizer, natural gas and environmental protection etc. The main role is to buffer the impact of liquid and gas to the catalyst in the reactor, protect the catalyst and improve the distribution of liquid and gas in the reactor.

Ceramic Ball 60

Ceramic Ball 60,High Alumina Inert Ceramic Ball,Al2O3 Inert Alumina Ceramic Balls,95% Alumina Grinding Ceramic Ball

Shanxi Ruineng Ceramic Material Co.,Ltd , https://www.rnceramic.com