Ductile Iron Pipes with high performance good price
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t
- Supply Capability:
- 1000 m.t/month
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full welded forged steel ball valve
Design Features of full welded forged steel ball valve
The body of ball valve is full welded,selects high quality forged material,and adopts the advanced forged forming technology to form two semi-spheres which are welded into a whole in the middle of the body.This welding technology differentiates the ball valve form others,and makes the valve more spherically,so the valve structure is more compacter,lighter and stronger.Besides,the middle direct welding realize highly accurate valve body manufacturing,makes fully and completely sealing between the seat and ball.The full welding instead of bolts completely avoids the outside leakage,so ball valve is the ideal product for under-ground,offshore working platform and under-sea equipments.
Adopting fixed plates or trunnion to support the ball
The top and bottom of the ball is supported by upper and lower fixed plates or stem and trunnion,and the ball is accurately placed in the center of the ball valve to achieve complete seals and precise movements.When plate adopted,the force exerted by the medium to the ball is distributed via the plate to the left and right bodies,so that the stem does not bear the blending moment from the medium,but only the torque from the ball rotation during the opening/closing of the valve.The low-friction PTFE Teflon composite bearings installed between the ball axis and fixed plate and between the stem and the trunnion can absorb ball moving action caused by the pressure of the medium.This structure brings stable actions and easy operations for the ball valves,and the required operation torque can be reduced,so smaller actuators can be used,and the cost is cut down.
ball valve seat is floating structure,means the seat can move along the medium direction,so that the seat can fit against the ball all the time.
（Ⅰ）Double piston effect structure seat of full welded forged steel ball valve
Seat design is special double pistons effect structure,it can ensure the seal wherever the medium flows into the ball valve.
（Ⅱ）Seat multistage seal strucute of full welded forged steel ball valve
As following graphic instruction,on seat bearing ring,set two soft sealing rings(A and B)and metal sealing spherical surface which can seal with the ball.Seat ring A is spring loaded,which seals the surface with the ball tightly to the surface to form an initial seat;When there is pressure generated from medium,the piston force is generated to make seal ring A elastically deformed and seal ring B fit the surface of the ball surface due to the piston effect caused by area difference,thus the second seal forms.When the medium pressure is rising.It will generate huge pressure to seal ring A and seal ring B,so the two seals have a greater elastic deformation,then metal seal ball surface compact with ball surface to form the third level of metal to metal seal.
（Ⅲ）Secondary seat seal device of full welded forged steel ball valve
As the above graphic instruction,the secondary seal device(seat grease injection valve)can be chosen according to the actual working condition,medium requirement,seal requirement,etc.Seat ring grease injection valve is a one-way valve,installed on the body,which can prevent the leakage and inject grease under the outside force.When secondary seal is required,there is a grease injecting channel and hole on the seat ring.The grease can form a seal between the seat and the ball,and then stop the leakage.
Standards Applied of full welded forged steel ball valve：
Design Standard | API 6D customize |
Connection Standard | ASME B 16.25-2007 ASME B 16.5 ASME B 31.4 ASME B 31.8 DIN GB、GB/T JB、JB/T JIS customize |
Test Standard | API 6D customize |
Face to Face | API 6D customize |
Pressure-teperature rating | ASME B 16.34-2004 customize |
Marking | MSS SP-25 customize |
FAQ of full welded forged steel ball valve:
Q1:I can’t find the type of steel check valve which I need. what can I do?
The chart above only lists out some common composition of steel check valve parts.We may provide other different parts material composition according to the customer's request or the actual valve working condition.
Q2:Which certification do your products pass?
Our products are in accordance with ISO 9001、ISO 14001、API 6A、API 6D、TS CE、API607/6FA/BS6755.
Q3:How can I place an order?
The only one thing you should do is to tell us the sepecification about type 、quantity and mode of transportation, then we will send you quotation within 24 hours.
- Q: Can ductile iron pipes be used for underground fuel storage systems?
- Yes, ductile iron pipes can be used for underground fuel storage systems. Ductile iron is a type of cast iron that possesses superior strength, durability, and flexibility compared to traditional cast iron pipes. These properties make ductile iron pipes suitable for various applications, including underground fuel storage systems. Ductile iron pipes are resistant to corrosion, which is essential for underground storage systems that may come into contact with various fuels and chemicals. Additionally, their high tensile strength and resilience allow them to withstand external pressure and loading, ensuring the integrity and safety of the underground storage system. Furthermore, ductile iron pipes have a long lifespan, typically lasting for several decades, making them a cost-effective choice for underground fuel storage systems. They can handle the weight of the stored fuel and any potential ground movements, maintaining the structural integrity of the system over time. However, it is important to note that the suitability of ductile iron pipes for underground fuel storage systems may also depend on other factors, such as local regulations, soil conditions, and the specific fuel being stored. It is always recommended to consult with professionals and adhere to applicable guidelines when designing and installing such systems to ensure compliance and safety.
- Q: How does ductile iron pipe perform in seismic conditions?
- Ductile iron pipe is known for its excellent performance in seismic conditions. It has proven to be a reliable and durable choice for underground water and wastewater systems, especially in areas prone to earthquakes. The inherent strength and flexibility of ductile iron pipe make it highly resistant to seismic forces. It can withstand ground movements and vibrations caused by earthquakes without significant damage or failure. This is due to its unique composition, which includes a high percentage of iron combined with small amounts of carbon and other alloying elements. The ductile iron pipe's ability to absorb and dissipate seismic energy through its inherent flexibility is crucial in seismic conditions. When the ground shifts during an earthquake, the pipe can adjust and deform slightly to accommodate the movement, thus minimizing stress concentrations and the risk of fractures. Moreover, ductile iron pipe has excellent joint integrity, which is vital in seismic conditions. The joints are designed to provide maximum strength and resistance against external forces, including seismic activity. Various joint types, such as push-on, mechanical, and restrained joints, are available to suit different seismic requirements and installation conditions. In addition to its mechanical properties, ductile iron pipe also offers long-term corrosion resistance. It is typically lined with a cement mortar or a protective coating, which acts as a barrier against corrosive elements in the soil or water. This corrosion resistance ensures the pipe's structural integrity and longevity, even in areas with high seismic activity. Overall, ductile iron pipe has a proven track record of performing exceptionally well in seismic conditions. Its strength, flexibility, joint integrity, and corrosion resistance make it a reliable choice for underground infrastructure, providing safe and efficient water and wastewater systems in earthquake-prone regions.
- Q: Can ductile iron pipes be used for water tunnel crossings?
- Yes, ductile iron pipes can be used for water tunnel crossings. Ductile iron pipes are known for their strength, durability, and resistance to corrosion, making them a suitable choice for various applications, including water tunnel crossings. They are capable of withstanding high pressure, external loads, and ground movements, which are often encountered in tunnel crossings. Additionally, ductile iron pipes have a long service life and require minimal maintenance, making them a cost-effective solution for water tunnel crossings.
- Q: How are ductile iron pipes repaired if they get damaged?
- There are several methods available for repairing ductile iron pipes, each dependent on the severity of the damage. Below are some commonly used techniques: 1. Spot Repair: When the damage is minimal and localized, a spot repair can be performed. This involves removing the damaged section of the pipe and replacing it with a new one. The new section is typically connected to the existing pipe using mechanical couplings or flanged connections. 2. Pipe Lining: If the damage is more extensive but the pipe remains structurally sound, pipe lining is a suitable option. This method entails inserting a liner into the damaged pipe, creating a new smooth surface. Various materials like epoxy or cured-in-place pipe (CIPP) can be used as liners. The advantage of this technique is that it eliminates the need for excavation and complete replacement of the pipe. 3. Pipe Bursting: In situations where the pipes are severely damaged or deteriorated, pipe bursting may be the most optimal solution. This process involves pulling a new pipe through the damaged one, simultaneously fracturing the old pipe and substituting it with a new one. Pipe bursting is typically employed when the existing pipe is irreparable and necessitates complete replacement. 4. Welding and Patching: In certain cases, small leaks or cracks in ductile iron pipes can be rectified through welding or patching. Welding involves melting and fusing the metal to seal the damaged area. Patching, on the other hand, involves applying a specialized epoxy or composite material over the affected section to create a watertight seal. It is essential to consider factors such as the extent of the damage, accessibility to the pipe, and the proficiency of the repair crew when selecting the appropriate repair method. Regardless of the technique chosen, a thorough assessment, meticulous planning, and skillful execution are necessary to ensure a successful and long-lasting repair.
- Q: Are ductile iron pipes suitable for installation in areas with high traffic loads?
- Yes, ductile iron pipes are suitable for installation in areas with high traffic loads. Due to their inherent strength and durability, ductile iron pipes can withstand heavy loads and are commonly used in applications where there is significant vehicular traffic.
- Q: Can ductile iron pipes be used for stormwater drainage?
- Yes, ductile iron pipes can be used for stormwater drainage. Ductile iron pipes are known for their strength and durability, making them suitable for various applications, including stormwater drainage systems. These pipes have high tensile strength and can withstand heavy loads and pressure, making them ideal for carrying large volumes of stormwater. Additionally, ductile iron pipes have a smooth interior surface that reduces friction and allows for efficient flow of water, minimizing the risk of blockages and clogging. With proper installation and maintenance, ductile iron pipes can provide a reliable and long-lasting solution for stormwater drainage.
- Q: How are ductile iron pipes transported and stored?
- Ductile iron pipes are typically transported and stored in a careful manner to ensure their integrity. They are commonly transported by trucks, rail, or waterways, using appropriate handling equipment such as cranes or forklifts. During transportation, they are secured to prevent any damage or movement that could affect their structural integrity. When it comes to storage, ductile iron pipes are usually stacked horizontally on stable surfaces, such as concrete or pallets, to prevent any deformation or bending. They are often stored in covered areas to protect them from weather elements that could cause corrosion or other damages. Additionally, pipes should be stored in a well-ventilated space to prevent moisture accumulation and potential rusting. Regular inspections are also conducted during storage to identify any signs of damage or deterioration. Overall, proper transportation and storage practices are crucial to maintain the quality and longevity of ductile iron pipes.
- Q: Can ductile iron pipes be used for underground utilities?
- Yes, ductile iron pipes can be used for underground utilities. Ductile iron is a strong and durable material that can withstand the pressure and load requirements of underground applications. It is commonly used for water and wastewater systems, gas distribution, and other underground utility infrastructure.
- Q: How do ductile iron pipes handle ground settlement due to construction activities?
- Ductile iron pipes have the ability to handle ground settlement caused by construction activities due to their flexibility and strength. These pipes are designed to withstand external pressure and can accommodate minor ground movements without significant damage or failure. The ductility of the material allows the pipes to deform slightly, absorbing the ground settlement and preventing them from cracking or breaking. Additionally, the joints in ductile iron pipes are typically flexible, allowing for further movement and reducing the risk of leakage or structural issues. Overall, ductile iron pipes are well-suited for withstanding ground settlement and ensuring the integrity of the pipeline system during construction activities.
- Q: Can ductile iron pipe be used in corrosive environments?
- Yes, ductile iron pipe can be used in corrosive environments. Ductile iron is known for its ability to resist corrosion and has been widely used in various applications where corrosion resistance is required. The corrosion resistance of ductile iron is due to its protective oxide layer, which forms naturally on its surface and acts as a barrier against corrosive elements. Additionally, ductile iron pipes can be coated with various protective coatings such as polyethylene or epoxy to enhance their resistance to corrosion. These coatings provide an extra layer of protection, making ductile iron pipes suitable for use in highly corrosive environments such as wastewater treatment plants, industrial plants, and marine applications. However, it is important to consider the specific corrosive elements present in the environment and consult with experts or follow industry standards to ensure the appropriate coating and maintenance practices are implemented for long-term performance and durability.
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Ductile Iron Pipes with high performance good price
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t
- Supply Capability:
- 1000 m.t/month
OKorder Service Pledge
OKorder Financial Service
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