General: As rainwater pipes are generally fitted externally, joints between each spigot and socket length do not need to be sealed. However offset fittings are sized to allow for push fit or solvent weld jointing. Gutter outlets are normally positioned directly above drain connections but on occasions it may be necessary to rotate the offset to avoid obstructions below. However when using the square downpipe system, the gutter outlet should be positioned directly above the rainwater drain connection, as square offsets cannot be rotated. Where a RH25 hopper head is used, the RLE3 outlet adaptor with a pipe socket are required to provide the necessary transition from circular to square.

downpipes 237x300 - Downpipes

1. Offset assembly

Offsets can be easily constructed on site from a range of bends depending on the roof overhang at the eaves. Where offsets exceed 600mm it is recommended that bends are solvent welded to gutter outlet spigots to ensure a positive connection. When two 87½° bends are used to construct an offset the horizontal section of pipe should be supported with a pipe clip from the soffit.

2. Location of pipe clips

Every rainwater pipe should have a clip located round the top socket to support the downpipe system. Intermediate clips should then be located at a maximum of 1.8m centres or in the middle of each length to maintain alignment. A gap of 10mm should be left between the end of each pipe and the bottom of the socket to allow for thermal movement. Two different pipe clip fixing methods are available. A one piece clip for flush fixing or a two piece clip to fit both the downpipe and pipe socket. These are used with backplate RCB300 and allow for adjustment. Each should be secured with two 32 x 6.5mm non-ferrous round head screws. An extension backplate RT200 can also be used for greater adjustment of the downpipe from the wall.

3. Drain connections

External rainwater pipes usually connect direct to the surface water drain. Where a direct connection is made a reducer and a short section of pipe is used to provide the transition between different pipe sizes. A gully trap will be required to both arrangements where the drain connects to a combined foul and surface water drainage system.

Differences between hot galvanizing and cold-galvanizing processes

The galvanizing process of building materials is very versatile, so today we will understand the difference between the two common galvanizing methods, hot galvanizing and cold-galvanizing. These two ways we define them in terms of definition, process.

galvanizing process - Differences between hot galvanizing and cold-galvanizing processes

Definition difference

Hot galvanizing is an effective metal anti-corrosion method, mainly used in metal structure facilities of various industries. The rust-removed steel is immersed in a zinc solution melted at about 500 ° C to adhere the zinc layer to the surface of the steel member, thereby preserving the corrosion. Galvanizing is for steel grid plates, which are chemically treated and are electrochemical reactions. Cold galvanizing is a physical treatment, except that a layer of zinc is applied to the surface, so the zinc layer is easy to fall off. Hot-dip galvanizing is often used in construction.

Cold galvanizing: It is electro-galvanized. The amount of zinc on the surface is small, only 10-50g/m2, which is a process of attaching a metal film to the surface of metal or other materials by electrolysis. The process of forming a uniform, dense, and good bonding metal layer can prevent corrosion, improve wear resistance, electrical conductivity, light reflectivity, and enhance aesthetics. Hot-dip galvanizing is the galvanization of the surface of the steel body under hot-dip conditions. Its adhesion is very strong and it is not easy to fall off. Although the hot-dip galvanized pipe also has rust phenomenon, it can meet the technology and hygiene in a long period. Claim.

Process difference

Hot galvanizing: It is a time when the workpiece is degreased, pickled, dipped, dried and immersed in molten zinc for a certain period of time.

Cold galvanizing: also called electro-galvanizing, is the use of electrolysis equipment to remove the oil, pickling and put into the solution of zinc salt y_toitt, and connect the negative electrode of the electrolysis equipment; place the zinc plate on the opposite side of the workpiece to connect to the electrolysis The positive pole of the device, when the power is turned on, and the current is moved from the positive electrode to the negative electrode, a layer of zinc is deposited on the workpiece.

If you want to know more details about the galvanizing process, please feel free to contact with us at any time.

Roll forming machine

The roll forming machine adopts high-level automatic control software to realize production information management. The entire unit automation control system uses a highly integrated network to make the automation system perform better. Color steel tile equipment also has the advantages of operation, maintenance, maintenance, mechanical debugging, and easy mold replacement.

Some types of roll forming machine

metal tile effect roofing sheets roll forming machine 300x169 - Roll forming machinedouble layer machine 300x300 - Roll forming machine

Components of roll forming machine

The roll forming machine is mainly composed of a left and right body, a bottom connecting rod, a top chassis cover, a pulley, a gear mechanism, a sheave mechanism, a cam mechanism, a lubrication pump, an oil circuit system, and an electric control department. Equipment should be wiped frequently, kept clean, and no muddy water.

Other information:

The roll forming machine will be equipped with a set of lubrication system. When the machine is running, it will automatically lubricate all the bearings, transmission gear mechanism and moving guides.

We can design and build customized forming machines, for example, some customers may prefer a separate forming stands structure trapezoidal sheet roll forming machine, and some customers needs safety guard on the roll forming machine body etc, the detailed specifications will vary from the above list and all quotation sheets will be made exactly as per the technical drawings customers supply.

If you have requirements about the machine, please feel free to contact with us at any time. We will provide the suitable solution to you according to your profile. And we provide the customers 24/7 services, so if you have any questions, we can give you the professional answer. If you have free time, welcome to visit our factory so that we can show you more details about our machine.

Glazed roof tile for building

Glazed roof tile has become a popular building material. It is made of high-quality ore raw materials, which are screened and pulverized, high-pressure molded and fired at high temperature. It has the advantages of high strength, good flatness, low water absorption, anti-folding, anti-freezing, acid resistance, alkali resistance, never fading, and so on. It is widely used in industrial and civil buildings such as factories, houses, hotels, villas, etc., and its styling is diverse, glazed, simple, colorful, environmentally friendly and durable, and won the respect of architectural masters. It is also has many characters to meet the different requirements. We also can customize the glazed roof tile making machine according to your real needs.

Some types glazed roof tile

tile drawing profile 288x300 - Glazed roof tile for building

Features of glazed roof tile

fireproof, waterproof, environmental protection and no toxicity, at the same time it is resistant against acid, alkali and aging. This product can be nailed,  planed, sawed and sticked. In view of that its fireproofing grade is A, so our product will not be combustible when  the fire is 800-1000°C. At the same time, when our product is fell into the water for a week, there are not the following phenomenon such as chalking, deformation and warp. In light of there is not glue in the raw materials,  so there is not formaldehyde and benzene for our boards.Rich color and never fading.


The advantages of floor decking

The floor decking is widely used in building construction and the construction of infrastructure. It is economical and affordable. So what is the floor decking? The floor decking(steel decking, building profiled steel plate) is formed by rolling cold-formed galvanized steel sheet. Its cross section is V-shaped, U-shaped, trapezoidal or the others. It is mainly used as a permanent template, can also be selected for other purposes.

750 floor deck 300x224 - The advantages of floor decking

floor deck 300x98 - The advantages of floor decking

The advantages of floor decking

1: Adapt to the requirements of rapid construction of the main steel structure, it can provide a firm working platform in a short time. And can use multiple floors to lay the profiled steel plate and layer the concrete flow.

2: In the use stage, the floor slab is used as the tensile reinforcement of the concrete slab, which also increases the rigidity of the slab and saves the amount of steel and concrete.

3: The embossing on the surface of the profiled board creates a large bonding force between the floor slab and the concrete. So that the two form a whole, with stiffeners, so that the floor slab system has high strength bearing capacity.

4: Under cantilever conditions, the floor slab is only used as a permanent template. The length of the cantilever can be determined according to the section characteristics of the floor panel. In order to prevent the cracking of the cantilever plate, it is necessary to match the design of the structural engineer with the negative reinforcement at the support.

Here is a video of the flloor deck roll forming machine

Corrugated metal roofing sheet

The signature shape of corrugated metal roofing sheet is the key to its durable, yet lightweight, characteristics which make it the perfect choice for many construction projects. This special corrugated shape adds strength to lightweight materials. This means that a lightweight metal like aluminum, which may otherwise be too flimsy, can be made sturdy enough to withhold years of beating in all kinds of weather.

Roof and Wall Corrugated Shee52 1 300x99 - Corrugated metal roofing sheet

Roof and Wall Corrugated Shee 1 300x164 - Corrugated metal roofing sheet

While commercial, industrial, and farming settings are using this type of roofing. But residential homeowners have recently increased the demand for the product. Additional improvements such as galvanized metal, which protects it against corrosion and rust, has allowed this sheet metal roofing to evolve from a limited material into one of the most sought-after roofing materials available.

Characteristics of Corrugated Metal Roofing Sheet

With all the properties that metals have, it is not uncommon for a metal roof to last for up to 100 years. It would make sense that a roof of this material would be able to withstand extreme weather conditions. Such as heat waves, snowstorms, hurricanes, and even hail storms. The most modern galvanized metal roofing also has fire resistant properties. And contrary to popular belief, is your safest option in areas where lightning strikes are common.

Those who are concerned with being environmentally friendly would be happy to know that corrugated roofing is completely recyclable. In warmer climates, metal roofing reflects the sun and reduces air-conditioning bills. While in cooler climates it can warm underlying areas. Its lightweight build reduces stress on the underlying walls of buildings, and so doesn’t require much structural support. When installed properly, leaks should never be a problem like they are with traditional roofing shingles.

Troubleshooting of the installation of the double layer roll forming machine

Troubleshooting of the installation of the double layer roll forming machine
The double layer roll forming machine is easy to install, but still we need to check every part well before we operate the machines, below are some tips on the Troubleshooting of the installation of the double layer roll forming machine, please check it, if you have any questions, please feel free let us know!

Troubleshooting of the installation of the double layer roll forming machine - Troubleshooting of the installation of the double layer roll forming machine
Manual work, not work automatically:
1 has cut the number of sheets is greater than or equal to the set number of sheets.
Treatment: clears the current number (ALM key press) sheets.
2 did not count the number or length set.
3 automatic switch button is damaged. (Available at any sign LAY3 series knob instead)

Manual and automatic do not work, the display does not show:
A power supply is not normal
2 Fuse. Solution: Replace the solenoid valve and check the lines are not damaged. (Fuse type 6A)

Unscrew the automatic, cutter has just gone up:
A limit switch open circuit damage.
2 solenoid valve stuck. Solution: Turn off the pump, use a screwdriver to poke back and forth from the solenoid valves at both ends of the solenoid valves manual reset pin until just feel elastic.

As long as an open pump, cutter all the way down:
Solenoid valve stuck. Solution: Turn off the pump, use a screwdriver to poke back and forth from the electromagnetic solenoid valves at both ends of the solenoid valves manual reset pin until just feel elastic.
If the solenoid valve is often stuck, you should change the oil and clean the solenoid valve.
* Solenoid valve stuck should start with a shallow end to the other end of the barrel, and then from
Activities at both ends poke back and forth.

Troubleshooting of the installation of the double layer roll forming machine 1 - Troubleshooting of the installation of the double layer roll forming machine

Steel roof roll forming machine

Steel roof roll forming machine
Color steel roof sheet made by the cold roll forming equipment.
Steel sheet roll forming machine consists of uncoiler and its base,infeed guides,fixd positiondriven forming stations,shearing device,hydraulic station,PLC control console and so on. Our company has hundreds of profile models for this series roll forming machine,We can design different kinds of profile and fittings for machine,as per customers’ requirements.
We use the enough good quality material and standrad craft for the machine production, to ensure the machine more stonger and longlife use.

Material Type Pre-paited steel sheet
(mm)Thickness 0.2-0.7
(Mpa)Yield stress 230-550
(m/min)Max.Forming Speed 8-12
Roller Material 45#steel with chrome treatment
Roller driven type Chain transmission
Controller PLC
Operation Touch screen and button
(Mpa)Hydraulic system pressure 12
(KW)Hydraulic station motor power 5.5
(KW)Main motor power 7.5
(KW)Total power 13
(kg)Total weight About10000

Coil inner diameter:Φ480 – Φ550 mm
Max coil out diameter: 1300 -1600 mm
Max coil width:1250 mm
Carrying capacity:5 T
Entry Beach:Put the raw material (steel plate) through the beach to manufacture and process,it can guarantee that the products are neat, parallel and everything is uniformity.Please refer to the equipment regulation to know the function of locate dam board.

Double layer roll forming machine 1 - Steel roof roll forming machine
Main machine:
cut-off system:Automatic cutting controlled by PLC. It adopts the hydraulic drive and automatic location to decide the dimension and cut the target products.
Hydraulic Station:The system includes a set of hydraulic tank, a set of hydraulic oil pump, 2 hydraulic pipes. And 1 sets of electromagnetism valves.
Electric control system:PLC Frequency Control System with touch screen
Receiver Table:

The advantages and disadvantages of different types receiving table

We can produce different types of receiving table for you, we are professional manufacturer of the receiving tables, we have produce the receiving tables for more than 17 year. Our receiving tables quality is very good and we can design and produce the receiving tables for you as your personal requirements. So if you have the demand of the receiving tables you can let me know.

Normally the receiving tables are used for the cold roll forming machines, some used for the roof tile roll forming machines and some used for the purlin roll forming machines and keel roll forming machines. The function of the receiving tables is to receive the ready made products from the roll forming machines.

There are two kinds of receiving tables, the automatic receiving tables and the manual receiving tables, the automatic receiving tables have more functions than the manual receiving tables, and at the same time the price is higher. Normally the manual receiving tables is enough for the production, because it is cheaper, this will save a lot of money for the buyer.

Our receiving tables are customized, so if you want to buy one receiving tables, you just let me know where you want to use this decoiler and the detail requirements of the manual receiving tables you demand, then we will design and produce for you.

Manual receiving tables:
Manual receiving tables1 300x108 - The advantages and disadvantages of different types receiving table

Automatic receiving tables:  

Manual receiving tables 300x225 - The advantages and disadvantages of different types receiving table

Sandwich Panel Production Line

Sandwich Panel Production Line
sandwich panel production line consists of single level roll forming machine,composite equipment and cutting equipment,it integrates the technology of cold roll and compositing,this product line can make composted corrugated roof sandwich panel at a time.It also can make wall sandwich panel. the core material can be chosen Polystyrene(EPS)and rock wool. The roll forming machine and composite equipment can separately produce.
We can design different kinds of profile and fittings for machine,as per customers’ requirements.

Sandwich Panel Production Line 300x225 - Sandwich Panel Production Line
Working flow:
Uncoiling-Roll Forming-Pre-cutting(if needed)-Heating-Glue Scratching-EPS Feediong-Compositing-Measuring Length&Shearing-Sheet to support table

Steel floor decking roll forming machine 1 300x83 - Sandwich Panel Production Line
Main technical parameters

Suitable face material Color steel sheet
Suitable core material EPS EPS EPS、ROCK WOOL
(m/min)Max.Forming speed 1-3Inverter adjustment
Best working temperature  about 25degree
Controller PLC
Operation Touch screen and button
(KW)Total Power 42Including heating motorpower
(kg)Total Weight about22000 about22000 about 25000
(mm)Total size(Length*Width*Height) 40000*3600*3300 40000*3600*3300 45000*3600*3300

Finished product pictures:

Sandwich panel

Sandwich Panel Production Line 1 300x116 - Sandwich Panel Production Line