What are Forged Pipe Fittings?



Forged Pipe Fittings (Thread Fittings and Socket Weld Fittings) are made in accordance to ASME (American Society of Mechanical Engineers) B16.11, MSS-SP-79\ 83\ 95\97 and BS3799 standards, and are used to connect nominal bore schedule pipes and pipelines. The applications range from chemical, petrochemical, power generation and OEM manufacturing industry as well other applications where vibration, high pressure or extremely corrosive conditions exist.




Forged pipe fittings are generally available in two materials: Carbon Steel (ASTM A105 material spec), and Stainless Steel SS316 (ASTM A182 material spec). The surface of carbon steel A105 forged pipe fittings may be further reinforced against corrosion through galvanizing. This is an optional add-on which customers may include at an additional cost.


Pressure Rating and Size Range:


Fittings come in a variety of classes and material grades for any application. The fittings are available in 2000lbs, 3000lbs, 6000lbs, and 9000lbs. Although class 2,000 and 9,000 fittings exist, these are rarely used and class 3,000 and 6,000 remain the more common class of fittings used. Sizes of forged fittings typically range from 1/8” (DN6) up to 4” (DN100). And reducing sizes are available for common parts like couplings, tees, hex bushings and nipples.


Connection Types:


Class 3,000 and 6,000 forged pipe fittings comes in two types of connection: Socket Weld, or Threaded. NPT (National Pipe Thread) is the most common thread type although BSPP (British Standard Pipe Parallel thread) is also being available for certain parts like Full Couplings, Hex Bushings and Hex Nipples. Socket weld connection is significantly more popular than threaded since most applications call for completely sealing off a line and eliminating all possibility of leakage.


The fittings are normally produced with the same connection for all sides of the same fitting. That means, a socket weld fitting will have socket weld connection on all sides. Should different connection ends be required, additional machining could be possible but at a higher cost and a longer lead time.


Brands of Forged Fittings:


A highly recommended manufacturer for forged pipe fittings is Wellgrow Industries Corp... Wellgrow was established in 1987 in Taiwan, and has been well-recognized among customers worldwide for excellence in its quality and services. Under the strict control system, we have been certified with ISO 9002 and made our OEM products widely extend to international well-known manufacturers. Learn more information about steel fittings, please feel free to contact Wellgrow.



Article Source: https://chuankok.wordpress.com/2016/01/26/what-are-forged-pipe-fittings/



Roofing Screws – A Metal Roofing Installation Essential

Three-inch self-tapping roofing screws are most frequently used to secure metal roofing, with the exception of the one-inch roofing screws which can sometimes be sufficient to attach the first edges of metal roofing sections. If, however, a metal roof is being installed on top of an existing asphalt roof, the first edges of each of its sections will have to be secured with three-inch roofing screws.


Self-tapping roofing screws are essential for simplifying metal roofing installation which has neither been factory pre-drilled nor dimple, because they are both faster to secure and reduce the risk of injury from snapped screws.


Sealing Metal Roofing


Because metal roofing has nothing in it which will seal the holes around roofing screws in the way asphalt roofing materials seal the holes around roofing nails, roofing screws manufacturers make two types of roofing screws. The first will have a sealer cap of metal which is seated directly on the roofing material and secured by the screw itself. The second will have washers of plastic or rubber integrated into their bodies, which automatically seal the holes in the roofing as they are inserted.


Roofing Screw Gun Alternatives


Metal roofing should not be hand-installed, because it demands that roofing screws be separated by no more than two feet. Driving this number of roofing screws by hand would quickly exhaust the hand and arm strength of the roofing crew, and relying on the rechargeable roofing screw guns now available would mean to switch to fresh batteries at hourly intervals. Because most rechargeable roofing screw gun batteries require a charging time of one hour, each roofing crew member would need four batteries to complete an eight hour shift!


One solution would be to use an electrically powered roofing screw gun which can operate without interruption for an entire day. Most of these screw guns are manufactured with adjustable power levels, enabling their users to select just the right amount of force to use when installing the roofing screws.


Roofing screws which are driven too deeply into a roof can either damage the roof itself or have their heaps snapped off, making them very difficult to remove. The disadvantage of using an electrically powered roofing screw gun is that it rewires the use of a long extension cord, which can be a hazard for those working on the rooftop.


The third alternative for installing roofing screws is the pneumatic screw gun, which is powered by an air compressor. The pneumatic patio roofing screw gun is attached to its air compressor by a long air hose, which like the extension cord on an electrical screw gun can be a real encumbrance when it is dragged around on the roof.


If you need further details about roofing screw and other screw series, welcome to visit our website and feel free to contact Fu Yeh – the various screw series manufacturing expert.


Article Source: http://EzineArticles.com/1442142



Katsuhana Fastener Manufacturer is the Answer

Katsuhana Fasteners Corporation is a professional fastener manufacturer, which specializes in fasteners & fittings more than 15 years. They manufacture TEK screw, tapping screw, SEMS screw, socket set screw, drywall screw, thread rolling screw, particleboard screw, deck screw, flooring screw, roofing screw, wood screw, mansory/concrete screw, furniture screw, collated screw, stainless steel screw, chipboard screw, machine screw, multi-stroke screw, open die screw, special coating, wire word, nail, bolt, nut/rivet, washer/stamping/pin/spring etc.


The co-operative fastener manufacturers, ISO 9001 certificated, as Katsuhana’s strong background and supporting, an affiliated company production capacity can be around 500-1000 metric tons per month. Katsuhana origins in the pronunciation of Japanese, the abbreviation of three first names of Japan clients, because of their experience, knowledge and skills pass on. Moreover, based on the spirits of Japanese, quality and service are much more than everything, the reliable supplier to you. When you want a speedy response, Katsuhana fastener manufacturer is the answer!


Various screws and fasteners with high quality by Katsuhana Screw Manufacturer

==Taiwan Screw Manufacturers & Screw Supplier==

Taiwanese screw manufacturer – Katsuhana Fasteners Corp. Specialized in the fasteners & fittings with more than 15 years. In the past, we just focus on the various small screw fields, such as thread rolling screw, self drilling screw, tapping screw, SEMS screw, set screw, drywall screw, machine screw, particle board screw, chipboard screw, wood screw, stainless steel screws etc. Katsuhana hold honesty as our principle to server customers for long-term cooperation within customers. We also hope that we could build up close partnership for mutual profit.

The Advantages Of AUSTEK:

  • No Carbonization
  • No Need Pre-Drilling Hole
  • High Tensile / High Torque/ High Security
  • High Anti-Corrosion
  • Non Magnetism
  • No Embrittlement
  • ACQ Treated-Wood Compliance

AUSTEK, 100% 300 Series

All stainless made of SUS 300 series (302,304,305,316), ” No Carbonization“. The invention patent of the world. Heating causing the stainless steel to loose its properties, the chemical compounds will be the same but the carbon will come out and cause rust. True-Stan remains unchanged but is much harder for penetration. The best choice to eliminate red rust, high anti-corrosion, specified worldwide in all the applications of interior or outdoor.


==Company Profile==

“Katsuhana Fasteners Corp” is a professional teamwork group and the leading manufacturer in Taiwan, specialized in the fasteners & fittings with more than 15 years. In the past, we just focus on the various small screw fields, such as self drilling screw, tapping screw, SEMS screw, set screw, drywall screw, machine screw, particle board screw, chipboard screw, wood screw, stainless steel etc. But now, Katsuhana can expend more various products to serve our clients “one stop shopping” such as nut, washer, stamping, multi-formers, bolt and nails and more.

“Katsuhana” origins in the pronunciation of Japanese, the high quality symbol in the world, because we are experienced in the knowledge and selling to Japan market, as well as to all over the worlds, base on the spirits of Japanese, quality and service are much more than everything, to be the reliable supplier to you.