• Model NO.: M2-M64
• Type: Round Head
• Head Style: Hexagonal
• Grade: 8.8
• Finish: Color-Zinc Plated
• Head Type: Hexagon, Round, Square
• Class/Grade: 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9
• Surface Finishing: Hot Galvanizing, Black, Color-Zinc, Blue-White Zin
• Specification: M2-M64
• HS Code: 7318150000

• Material: Carbon Steel
• Connection: Common Bolt
• Standard: DIN, ANSI, GB, JIS, BSW, GOST
• Application: Machinery
• Available Material: Carbon Steel, High Strength Steel, Stainless Steel
• International Standard: DIN, ANSI, GB, JIS, Bsw, GOST
• Used: Machinery, Chemical Industry, Environmental, Buildi
• Trademark: HN
• Origin: Jiaxing China

• A bolt is a form of threaded fastener with an external male thread. Bolts are thus closely related to, and often confused with, screws. 
• A hex cap screw is a cap screw with a hexagonal head, designed to be driven by a wrench (spanner). An ASME B18.2.1 compliant cap screw has somewhat tighter tolerances than a hex bolt for the head height and the shank length. The nature of the tolerance difference allows an ASME B18.2.1 hex cap screw to always fit where a hex bolt is installed but a hex bolt could be slightly too large to be used where a hex cap screw is designed in.

  Products name	DIN7991 Hex Socket Countersunk Head Bolts
  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
  For more information visit:www.hainafastener.com

  
  
  
  
  Service
   
  • Professional Manufacturer: All of our Fastener are designed and manufactured according to buyers' specification and performance.
  • Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.
  • Cost effective: Competitive prices with factory directly supply
  • Perfect fastening solution with 20 years experiences to solve your problem: Wide range of parts selection.
  • Customized Ideal Fasteners: customized services according to the samples and drawings offered.
                  If you are not sure about what exactly you need - feel free to contact us anytime and get professional assistance from us.
   

Membrane/Water Wall Material and Arrangement:
The furnace and roof are made up of membrane water wall and hung on the steel structure by upper hanging suspender of water cooling upper header. Furnace intersecting surface is 3170×5290mm² and the elevation of top furnace is 28877mm. The membrane water wall is made up of φ60×5 and 6×45 welding steel flat. The combustion chamber is made of φ60×4 steel tube and welded with pin to fasten refractory material. The upper part of combustion chamber connects with furnace membrane water wall. The lower part connects with water cooling wind chamber and water cooling air distributor. The water cooling wind chamber is made up of φ60 steel tube and welded with pins to fasten the refractory material. The water cooling distributor is welded with φ60 steel tube and 6X45 steel flat. The small holes on the steel flat connects with the funnel cap.
The furnace divides left, right, front and back water circulation circuit. The steam leading tube is made up of φ133×5 and φ108×4.5 steel tube. The downcomer is made up of φ108×4.5 steel tube. Install the blowdown valve under the lower header to periodic blow down.

Heat Surface

Heat Surface,Scraped Surface,Heat Transfer Surface,Heating Surface For Coal Boilers

Jinan Boiler Group Co., Ltd. , https://www.jinanboiler.com