Red Painted Fire Fighting ERW Ms Steel Pipe with Grooved Ends
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Model NO.: Fire Fighting Pipe
Customized: Non-Customized
Gasket Material: Q195, Q235, Q345
Coomodity: Red Painted Fire Fighting ERW Ms Steel Pipe with G
Size: Dn 15 - Dn 200
Thickness: 1.3 -- 10mm
Length: 6 M in Stock or Customize
Material: Q195, Q235, Q345
Standard: GB/T 3091, BS1387, ASTM A53 and So on
Pipe Ends: Plain Ends, Bevel Ends, Threaded or Grooved
Surface: Black, or Oiled or Painted
Original: China
Producing Technique: High Frequency Welded, Hot Rolled
Trademark: "YOUFA"; "ZHENGYUAN"BRAND
Transport Package: 1. in Bundles; 2. in Bulk, 3. as Your Request
Specification: Round pipe: 20~610mm
Origin: China
HS Code: 730630
Red Painted Fire Fighting ERW Ms Steel Pipe with Grooved Ends


 Tianjin Youfa Steel Pipe Group Company
Brief introduction:
Tianjin Youfa Steel Pipe Group Co., Ltd were founded on July 1st, 2000, located at Daqiuzhuang Village, Tianjin city, which is a large-scale steel pipe manufacturing enterprise producing ERW steel pipe, hot-dipped galvanized steel pipe, seamless pipe, SSAW steel pipe, square/rectangular steel pipe.
Youfa brand was affirmed as a China renowned brand by SAIC trademark bureau in March 2008. Youfa brand of ERW steel pipes, hot-dipped galvanized steel pipes, and SSAW steel pipes, has been awarded as "famous-brand product of Tianjin" by Tianjin government for many consecutive years. In six consecutive years, Youfa Group have been rated as top 500 enterprises of China in the same industry, and as top 500 manufacturing of China. In 2012, Youfa Group was rank No.375 in top 500 enterprises of China, and No. 200 in top 500 manufacturing of China, and No.3 in top 100 private enterprises of Tianjin.
Red Painted Fire Fighting ERW Ms Steel Pipe with Grooved Ends

Who We are?
(1) China Top 500 Enterprises Industry Leading Brands 
(2) 15 years experience in manufacturing and exporting steel products since 2000.
(3) For 10 Consecutive Years of The First Production and Sales
(4) Key Project Supplier---Three Gorges Project, the Capital International Airport, Shanghai Pudong International Airport, the 2008 Olympic Games venues , the Word Expo 2010, etc.

What We own?
8000 employees.
59 ERW steel pipe production lines
36 hot-dipped galvanized steel pipe production lines
24 square and rectangular steel pipe production lines
18 SSAW steel pipe production lines
16 steel-plastic complex steel pipe production lines
9 hot-dipped galvanized square and rectangular steel pipe production lines
5 Seamless steel pipe production lines
3 national accredited laboratory 
1 Tianjin government accredited business technology centerRed Painted Fire Fighting ERW Ms Steel Pipe with Grooved Ends
Product Description                                                                      

Main Application:

1. Fluid / Gas delivery, Steel structure, Construction;

2. YouFa ERW/Welded carbon steel pipes, which with Highest quality and strong supply ability arewidely used in Steel structure and Construction.

Note:
1. Free sampling, 100% after-sales quality assurance, Support any payment method;

2. All other specifications of ERW/Welded carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from YouFa.

Product Show

Product show                                                                                  

      YouFa has 20 years manufacturer experience, Providing high quality products which have been exported over 100 countries, Pipes can be Customized according to customer's requirement on outside diameter and wall thickness with black painted or oiled(surface treatment).
Red Painted Fire Fighting ERW Ms Steel Pipe with Grooved Ends
Red Painted Fire Fighting ERW Ms Steel Pipe with Grooved Ends
Red Painted Fire Fighting ERW Ms Steel Pipe with Grooved Ends
 

FAQ                                                                                              

Q: Are you trading company or manufacturer?

A: Factory!we are Youfa Group with 3 production area (Tianjin, Tangshang, Handan) in China.

Q: Can I have a trial order only for several tons?

A: Of course! We can ship the cargo for you with LCL service(Less container load).

Q: How long is your delivery time?

A: Generally it is 3-5 days if goods are in stock. Or it is 30 days if the goods are not in stock, it is according to your quantity.

Q: Do you provide samples? Is it free or extra?

A: Yes, We could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment?

A: OR, TT, L/C(For big order,30-90 days can be acceptable).

TIANJIN YOUFA STEEL PIPE GROUP
TIANJIN YOUFA INTERNATIONAL TRADE CO., LTD

CONTACT PERSON: Mr.Vincent Cao (sales manager)

Mobile: 86 15102237097
Http: www.yfgg.com
 

Check Valves

A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball check Valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow.

Ball check valves are often very small, simple, and cheap. They are commonly used in liquid or gel minipump dispenser spigots, spray devices, some rubber bulbs for pumping air, etc., manual air pumps and some other pumps, and refillable dispensing syringes. Although the balls are most often made of metal, they can be made of other materials, or in some specialized cases out of artificial ruby. High pressure HPLC pumps and similar applications commonly use small inlet and outlet ball check valves with both balls and seats made of artificial ruby, for both hardness and chemical resistance. After prolonged use, such check valves can eventually wear out or the seat can develop a crack, requiring replacement. Therefore, such valves are made to be replaceable, sometimes placed in a small plastic body tightly-fitted inside a metal fitting which can withstand high pressure and which is screwed into the pump head.

There are similar check valves where the disc is not a ball, but some other shape, such as a poppet energized by a spring. Ball check valves should not be confused with Ball Valves, which is a different type of valve in which a ball acts as a controllable rotor to stop or direct flow.

A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.

A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank Drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure. Another example is the backwater valve (for sanitary drainage system) that protects against flooding caused by return flow of sewage waters. Such risk occurs most often in sanitary drainage systems connected to combined sewerage systems and in rainwater drainage systems. It may be caused by intense rainfall, thaw or flood.

A stop-check valve is a check valve with override control to stop flow regardless of flow direction or pressure. In addition to closing in response to backflow or insufficient forward pressure (normal check-valve behavior), it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.

A lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.

An in-line check valve is a check valve similar to the lift check valve. However, this valve generally has a spring that will 'lift' when there is pressure on the upstream side of the valve. The pressure needed on the upstream side of the valve to overcome the spring tension is called the 'cracking pressure'. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.

A duckbill valve is a check valve in which flow proceeds through a soft tube that protrudes into the downstream side. Back-pressure collapses this tube, cutting off flow.

A pneumatic non-return valve.

Multiple check valves can be connected in series. For example, a double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. There are also double ball check valves in which there are two ball/seat combinations sequentially in the same body to ensure positive leak-tight shutoff when blocking reverse flow; and piston check valves, wafer check valves, and ball-and-cone check valves.

Check Valves, Water Check Valves, Brass Check Valves, Sanitary Check Valves

ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalves.com