Product Description

1.Product Description

 

Product Name	Ductile iron grooved pipe fittings and couplings
Product series	1)Rigid coupling, Flexible coupling
	2)Grooved equal tee, Grooved reducing tee, Threaded reducing tee,Grooved
	mechanical tee,Threaded mechanical tee,Threaded U-Bolted mechanical tee
	3)90°Elbow, 45°Elbow, 22.5°Elbow, 11.25°Elbow
	4)Grooved equal cross,Grooved reducing cross,Threaded reducing cross
	5)Grooved reducer,Threaded reducer, Threaded eccentric reducer
	6)Grooved adaptor flange, Threaded adaptor flange,Spilit Flange
	7)Cap
	8)Produce per customer’s requirement
Brand	Yinuo
Certification	FM/UL/CE/CCC/ISO
Size	1/2 inch-12 inch
Material	Ductile iron,ASTM A536/QT450-10
Technics	Casting
Working pressure	300Psi/2.07Mpa
Surface finish	Epoxy powder,Paint,Galvanized
Gasket	EPDM
Bolt and Nut	Heat treated carbon manganese steel track bolt to ASTM A 449-83
Capacity	30000 Tons/Year
Packing	1)Carton,Plywood pallet with plastic film
	2)Wood case
	3)As per cutomer’s requirement
Delivery Time	25-40 days after receiving deposit
Payment terms	T/T or L/C at sight
Application	1)Automatic sprinkler system for fire protection on commercial,civil and
	munisipal constructions like water supplying,gas supplying,heat supplying,etc.
	2)Industrial pipeline system on shipping, mine, oil field, textile,powder plant,etc.
	3)Pipeline system on subway station,railway station,airport,seaport,bridge,etc.

2.Product Pics

3.About Us

HangZhou CZPT Co.,Ltd is a large high-tech enerprise specialized in development,creation ,casting,production and painting of ductile iron grooved fittings since 2001.

Our facilities now covers more than 3000 aquare meters,the annual production capacity is well above 30000 tons,and there are more than 200 employees,among which are 10 engineering technicians and 5 senior engineers.

Now our factory departments inlude 11 medium frequency furnace,4 advanced vertical parting molding lines and 3 painting lines.Every coustomers requirements can be satisfied by customized services. 

4.Production Process

A rough castings of grooved fittings will be processed and produced by electric-furnice smelting,on-line monitoring and control and automatic molding methods.

5.Strict Testing and all kind of testing

Casting and metallurgical mircrostrcuture test,Experimentsof mechanics of materials,Experiment of rubber physical properties,Molding sand performance test,Pipe trech performance test,Size test,Pressure test,spectrum test.
:
Application: As 1 of the most popular fittings in fire fighting systems, the grooved pipe fittings are widely used in fire fighting, air-conditioning, water supply, sewage, cement, oil&gas pipeline, mine piping and ordinary piping delivery. CZPT is spreading all over the world and winning the appreciations from users at home and abroad.

ø Corporate Vision: Where there is pipes, there is 1NUO.
ø Corporate Mission: Connecting pipeline around the world, benefiting homes in every building.
ø Competitive Strategy: To supply market with perfect products, to win customers with excellent service.
ø Core Value: Pragmatic honesty, quality first, continuous innovation and CZPT cooperation.
ø Quality Value: We survive with quality and develop by technology.

6.Certificate:

FAQ:

Q1. Are you manufactrer?
A:  Yes, we have factories.

Q2. What is your delivery time?
A: The time of delivery is around 15-20 days,depending on order quantity.

Q3. What is your payment terms?
A: We accept 30% T/T in advance, 70% in the period of shipment or L/C at sight.

Screw Shaft Types

A screw shaft is a cylindrical part that turns. Depending on its size, it is able to drive many different types of devices. The following information outlines the different types of screws, including their sizes, material, function, and applications. To help you select the right screw shaft, consider the following factors:

Size

A screw can come in a variety of shapes and sizes, ranging from a quarter to a quarter-inch in diameter. A screw is a cylindrical shaft with an inclined plane wrapped around it, and its main function is to fasten objects together by translating torque into a linear force. This article will discuss the dimensions of screws and how to determine the size of a screw. It is important to note that screw sizes can be large and small depending on the purpose.
The diameter of a screw is the diameter of its shaft, and it must match the inner diameter of its nuts and washers. Screws of a certain diameter are also called machine screws, and they can be larger or smaller. Screw diameters are measured on the shaft underneath the screw head. The American Society of Mechanical Engineers (ASME) standardized screw diameters in 3/50-inch to 16 (3/8-inch) inches, and more recently, sizes were added in U.S. fractions of an inch. While shaft and head diameters are standardized, screw length may vary from job to job.
In the case of the 2.3-mm screw group, the construct strength was not improved by the 1.2-mm group. The smaller screw size did not increase the strength of the construct. Further, ABS material did not improve the construct strength. Thus, the size of screw shaft is an important consideration in model design. And remember that the more complex your model is, the larger it will be. A screw of a given size will have a similar failure rate as a screw of a different diameter.
Although different screw sizes are widely used, the differences in screw size were not statistically significant. Although there are some limitations, screws of different sizes are generally sufficient for fixation of a metacarpal shaft fracture. However, further clinical studies are needed to compare screw sizes for fracture union rates. So, if you are unsure of what size of screw shaft you need for your case, make sure to check the metric chart and ensure you use the right one.

Material

The material of a screw shaft plays an important role in the overall performance of a screw. Axial and central forces act to apply torque to the screw, while external forces, such as friction, exert a bending moment. The torsional moments are reflected in the torque, and this causes the screw to rotate at a higher rate than necessary. To ensure the longevity of the screw, the material of the screw shaft should be able to handle the bending moment, while the diameter of the shaft should be small enough to avoid causing damage.
Screws are made from different metals, such as steel, brass, titanium, and bronze. Manufacturers often apply a top coating of chromium, brass, or zinc to improve corrosion resistance. Screws made of aluminum are not durable and are prone to rusting due to exposure to weather conditions. The majority of screw shafts are self-locking. They are suited for many applications, including threaded fasteners, C-clamps, and vises.
Screws that are fabricated with conical sections typically feature reduced open cross-sectional areas at the discharge point. This is a key design parameter of conical screw shafts. In fact, reductions of up to 72% are common across a variety of applications. If the screw is designed to have a hard-iron hanger bearing, it must be hardened. If the screw shaft is not hardened, it will require an additional lubricant.
Another consideration is the threads. Screw shafts are typically made of high-precision threads and ridges. These are manufactured on lathes and CNC machines. Different shapes require different materials. Materials for the screw shaft vary. There are many different sizes and shapes available, and each 1 has its own application. In addition to helical and conical screw shafts, different materials are also available. When choosing material, the best 1 depends on the application.
The life of the screw depends on its size, load, and design. In general, the material of the screw shaft, nut body, and balls and rollers determine its fatigue life. This affects the overall life of the screw. To determine whether a specific screw has a longer or shorter life, the manufacturer must consider these factors, as well as the application requirements. The material should be clean and free of imperfections. It should be smooth and free of cracks or flaking, which may result in premature failure.

Function

The function of a screw shaft is to facilitate the rotation of a screw. Screws have several thread forms, including single-start, double-start and multi-start. Each form has its own advantages and disadvantages. In this article we’ll explore each of them in detail. The function of a screw shaft can vary based on its design, but the following are common types. Here are some examples of screw shaft types and their purposes.
The screw’s torque enables it to lift objects. It can be used in conjunction with a bolt and nut to lift a load. Screws are also used to secure objects together. You can use them in screw presses, vises, and screw jacks. But their primary function is to hold objects together. Listed below are some of their main functions. When used to lift heavy loads, they can provide the required force to secure an object.
Screws can be classified into 2 types: square and round. Square threads are more efficient than round ones because they apply 0deg of angle to the nut. Square threads are also stronger than round threads and are often used in high-load applications. They’re generally cheaper to manufacture and are more difficult to break. And unlike square threads, which have a 0deg thread angle, these threads can’t be broken easily with a screwdriver.
A screw’s head is made of a series of spiral-like structures that extend from a cylindrical part to a tip. This portion of the screw is called the shank and is made of the smallest area. The shank is the portion that applies more force to the object. As the shaft extends from the head, it becomes thinner and narrow, forming a pointed tip. The head is the most important part of the screw, so it needs to be strong to perform its function.
The diameter of the screw shaft is measured in millimeters. The M8 screw has a thread pitch of 1.25 mm. Generally, the size of the screw shaft is indicated by the major and minor diameter. These dimensions are appended with a multiplication sign (M8x1).

Applications

The design of screws, including their size and shape, determines their critical rotating speeds. These speeds depend on the threaded part of the screw, the helix angle, and the geometry of the contact surfaces. When applied to a screw, these limits are referred to as “permissible speed limits.” These maximum speeds are meant for short periods of time and optimized running conditions. Continuous operation at these speeds can reduce the calculated life of a nut mechanism.
The main materials used to manufacture screws and screw shafts include steel, stainless steel, titanium, bronze, and brass. Screws may be coated for corrosion resistance, or they may be made of aluminium. Some materials can be threaded, including Teflon and nylon. Screw threads can even be molded into glass or porcelain. For the most part, steel and stainless steel are the most common materials for screw shafts. Depending on the purpose, a screw will be made of a material that is suitable for the application.
In addition to being used in fasteners, screw shafts are used in micrometers, drillers, conveyor belts, and helicopter blades. There are numerous applications of screw shafts, from weighing scales to measuring lengths. If you’re in the market for a screw, make sure to check out these applications. You’ll be happy you did! They can help you get the job done faster. So, don’t delay your next project.
If you’re interested in learning about screw sizing, then it’s important to know the axial and moment loads that your screws will experience. By following the laws of mechanics and knowing the load you can calculate the nominal life of your screw. You can also consider the effect of misalignment, uneven loading, and shocks on your screw. These will all affect the life of your screw. Then, you can select the right screw.