Welding Ductile Iron

Ductile Iron Valve Wafer Ductile Iron Valve
Ductile Iron Valve Wafer Ductile Iron Valve
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Min Order Qty: 100 PCS
Supply Capability: 1000 PCS/month
Ductile Iron Manhole Cover MC054 Grey Iron
Ductile Iron Manhole Cover MC054 Grey Iron
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Min Order Qty: 100 m.t.
Supply Capability: 10000 m.t./month
Manhole Cover Ductile Iron, Grey Iron Square
Manhole Cover Ductile Iron, Grey Iron Square
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Min Order Qty: 200 pc
Supply Capability: 9999 pc/month
Gate Valves Ductile Iron Cast Iron  Manufacturing
Gate Valves Ductile Iron Cast Iron Manufacturing
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Min Order Qty: 100 PCS
Supply Capability: 1000 PCS/month
Ductile Iron Pipe Cast Iron EN545 DN800
Ductile Iron Pipe Cast Iron EN545 DN800
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Min Order Qty: 999 m
Supply Capability: 9999 m/month
ductile iron pipe china Material:Ductile Iron
ductile iron pipe china Material:Ductile Iron
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Ductile Iron Pipe Cast Iron DN500 EN598
Ductile Iron Pipe Cast Iron DN500 EN598
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Min Order Qty: 20 m.t.
Supply Capability: 100000 m.t./month
Grating Ductile Iron Cast Iron High Quality
Grating Ductile Iron Cast Iron High Quality
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Min Order Qty: 500 pc
Supply Capability: 5000 pc/month
Manhole Cover B125 Cast Iron Ductile Iron
Manhole Cover B125 Cast Iron Ductile Iron
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Min Order Qty: 500 pc
Supply Capability: 10000 pc/month
Ductile Iron Pipe Cast Iron EN545  DN500
Ductile Iron Pipe Cast Iron EN545 DN500
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Min Order Qty: 1000 m
Supply Capability: 10000 m/month
Butterfly valve Cast Iron and Ductile Iron
Butterfly valve Cast Iron and Ductile Iron
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Min Order Qty: 500 pc
Supply Capability: 5000 pc/month
Ductile iron/ cast iron gate valve pn16
Ductile iron/ cast iron gate valve pn16
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Min Order Qty: 111 PCS
Supply Capability: 1000 PCS/month
ductile iron pipe
ductile iron pipe
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ductile iron pipe of China  Material:Ductile Iron
ductile iron pipe of China Material:Ductile Iron
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Ductile Iron Pipe Casting Iron EN598 DN1600
Ductile Iron Pipe Casting Iron EN598 DN1600
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Min Order Qty: 999 m
Supply Capability: 9999 m/month
Ductile Iron Pipe DN150
Ductile Iron Pipe DN150
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DUCTILE IRON PIPE DN2400
DUCTILE IRON PIPE DN2400
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Ductile Iron Taper
Ductile Iron Taper
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Min Order Qty: 1 Ton m.t.
Supply Capability: 50,000 Ton Per Year m.t./month
DUCTILE IRON PIPE DN300
DUCTILE IRON PIPE DN300
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Ductile iron pipe DN400
Ductile iron pipe DN400
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DUCTILE IRON PIPE DN1400
DUCTILE IRON PIPE DN1400
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Ductile Iron fittings
Ductile Iron fittings
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DUCTILE IRON PIPE DN4100
DUCTILE IRON PIPE DN4100
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DUCTILE IRON PIPE DN350
DUCTILE IRON PIPE DN350
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ISO2531 Ductile Iron Pipe
ISO2531 Ductile Iron Pipe
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DUCTILE IRON PIPE DN3400
DUCTILE IRON PIPE DN3400
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Ductile Iron fittings
Ductile Iron fittings
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DUCTILE IRON PIPE DN1200
DUCTILE IRON PIPE DN1200
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DUCTILE IRON PIPE DN3700
DUCTILE IRON PIPE DN3700
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DUCTILE IRON PIPE DN900
DUCTILE IRON PIPE DN900
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Ductile iron pipe DN1300
Ductile iron pipe DN1300
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Ductile iron gate valve
Ductile iron gate valve
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Min Order Qty: 100 PCS
Supply Capability: 1000 PCS/month
Ductile Iron Reducing  Valve
Ductile Iron Reducing Valve
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Ductile iron pipe DN900
Ductile iron pipe DN900
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ductile cast iron fitting
ductile cast iron fitting
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Ductile Iron Bend
Ductile Iron Bend
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Min Order Qty: 1 Ton m.t.
Supply Capability: 50,000 Ton Per Year m.t./month

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FAQ

What are the types and product categories of knife gate valves?
Definition of knife gate valve:Knife gate valve called knife type valve, knife gate valve, slurry valve, slurry valve, it is a gate opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, by the blade shaped gate can cut fiber material to cut off the media, there are two gate sealing surface, the valve gate pattern is the most common the two sealing surface to form a wedge, the wedge angle varies with the valve parameters, usually 5 degrees, the wedge type knife gate valve can be made into a whole, called the rigid gate; can also be made to produce micro deformation of ram, in order to improve its process of deviation, make up the sealing surface angle in the process. This gate is called the flexible gate.s
Notes on flat gate valves
internal structureThe 1 seat O ring seal and preload floating seat structure, so that import and export of two-way valve seal plate; and the structure of the normal valve opening and closing torque only 1/2, can easily open and close valves2. when fully open, the channel is smooth and straight, the flow resistance coefficient is extremely small, and there is no pressure loss. The pipeline can be cleaned through the hair bulb3 the packing structure with the ability of self sealing, without frequent adjustment, opening and closing very lightweight, and reliable seal, the stuffing box is arranged at the auxiliary seal oil into the structure, absolutely reliable sealing performance, thereby achieving zero leakage; solve the shortcomings of the general valve packing leakage of the most vulnerable4., when the flat gate valve is closed, it can automatically unload the inner cavity high pressure, and ensure the safe use5., fully enclosed structure, good protection performance, can adapt to all-weather requirements6., the valve seat sealing structure should be elastic, preload, upper and lower sealing seat at the same time sealed structure. The valve seat and the seal are always face to face sealed.The 7. seat has self-cleaning function and is free of direct airflow during valve opening or closing. The seat shall be made of lubricated, non wearing material.8. valve actuator failure will not affect the other parts of the valve, maintenance and replacement work can be carried out without removing the valve.9. yoke sleeve aluminum bronze yoke sleeve with pin type thrust bearing to minimize operation torque.10. stem - thread length until bracket; dowel and spot welding; stability.11. pressure seal - simple construction, with sectional retaining rings and silver plated low carbon steel gaskets, helps to remove and achieve the best bonnet seal.12. seat ring - welded seat ring is perpendicular to the flow channel and is easy to maintain.s
Valve flange drawing n- up to what
A bolt hole used to indicate a flangeThe value of N indicates the number of bolt holesUp to the numerical representation of bolt hole sizes
What is the difference between the cut-off valve and gate valve, the general will use the cut-off valve instead of gate valve
Stop valve and gate valveThe working principle is different. The stop valve is an upward stem type, and the handwheel rotates and rises with the stem. Valve is hand wheel rotation, stem upward movement. Flow is not the same, the gate valve requires full open, the cut-off valve is not the same. The gate valve has no inlet and outlet direction requirements, and the cut-off valve has the required inlet and outlet!Gate valve and stop valve are shut-off valve, is the most common two valves.From the exterior, the gate valve is shorter than the cut-off valve, especially the bar valve needs a higher height space. Valve sealing surface has a certain degree of self sealing capacity, its spool depends on the media pressure tight contact with the valve seat sealing surface, to achieve tight leakage. Wedge gate valve spool angle is generally 3~6 degrees, when forced to shut down excessive or temperature changes of the valve core is easy to die. Therefore, high temperature and high pressure wedge gate valve, in the structure have taken certain measures to prevent spool stuck. The valve in the opening and closing valve and valve seat sealing surface contact and mutual friction is always so easy to wear sealing surface, especially in close off the valve, the valve before and after the great pressure, sealing surface wear is more serious.s
Soft sealed gate valve and hard sealing gate valve which good?
If the caliber, material and pressure levels are the same, the current market price is still soft sealed gate valve, about 20-30%.s
What are the standards for the execution of cast iron dark pole gate valves?
They are also standard in the production of cast iron dark rod gate valves:Design and manufacture: as per GB/T12234-89 regulationsLength of structure: as specified by GB/T12221-89Flange dimensions: as specified in JB79 GB/T9112-9131Inspection and test: as specified in JB/T9092-99 GB/T13927-92Drive mode: manual, electric, gear drives
Is the axial force and torque of the wedge gate valve the same?
The sealing performance is good, the gate valve is not easy to be jammed when heated, and is suitable for the parts with frequent switches. B is suitable for steam, high temperature oil and gas medium. C is not suitable for easy coking medium.s
Z41T one 10 gate valve and Z44T one, 10 gate valve difference
Z41T one, 10 is single gate, Z44T one, 10 is double gateAccording to the provisions of the JB/T 308-2004 valve type programming method:Z== gate valve4== connection: flange type1== structure: Rigid single gate4== structure: Rigid double gateT== sealing surface material: copper alloy10== pressure rating: 1.0MPas

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