Hot Rolled Galvanized Steel Pipe-DN25
Less than 12m
Q195 → Grade B, SS330,SPHC, S185
Q215 → Grade C,CS Type B,SS330, SPHC
Q235 → Grade D,SS400,S235JR,S235JO,S235J2
Q345 → SS500,ST52
BS EN10296,BS EN10025,BS EN10297,BS6323, BSEN10219,BSEN10217,GB/T13793-1992,GB/T14291-2006 GB/T3091-1993,GB/T3092-1993,GB3640-88
Used For Structure, Accessorize And Construction
3) Thread with Coupling or cap
1) Plastic pipe cap
2) Iron protector
2) Black Painted (varnish coating)
4) With Oiled
5) 3 PE, FBE, corrosion resistant coating
Electronic Resistance Welded (ERW )
Electronic Fusion Welded (EFW)
Double Submerged Arc Welded (DSAW)
Welded Line Type
With Hydraulic Testing, Eddy Current , Infrared Test
2) In Bulk
4) Clients' Requirements
2) Bulk carrier
Port of Shipment
Xingang Port,Tianjin, China
Date of Delivery
According To The Quantity And Specification Of Each Order
Fitting as screws and flange also can be supplied.
Q: Why should you choose us:
A: 1. More than 10 years experience in this industry
2. 100,000 tons exporting per month
3. Professional foreign trade tea
4. OEM&ODM capacity
5. High quality assured & competitive price
6. Try our best to meet your needs & save your budget
7. Very popular in Southeast Asia, Africa, Mid-East and South America etc.
8. VIP membership system, first time customers and long-term cooperation customers can get extra discount on some products.
- Q:What kind of refractory material is used in the furnace when the boiler reaches more than 1200 degrees?
- except refractory brick, refractories include refractory concrete (refractory cement+aggregate), fire-resistant insulating layer (refractory cement+vermiculite powder or refractory cement + diatomaceous earth) and so on.
- Q:What is the concept of lightweight refractory material?
- Lightweight refractory material has high porosity, mechanical strength and erosion resistance. Compared with normal refractory bricks, it is a kind of refractory material with large volume shrinkage in high temperature, low thermal conductivity and small bulk density. It is used as thermal insulation material in industrial furnace and other thermal equipments. It has poor wear resistancel.
- Q:What is the life of an old fashioned refractory brick kiln transformed into a flat topped tunnel kiln?
what material should be used to transform the old fashioned refractory bricks vault kiln to flat tunnel kiln, and how long is the service life?
- high alumina brick is more durable than castable refractory.
- Q:What are included in fireproofing materials?
- There are many types of fireproof materials, and the following listed below is the main species: All kinds of fire retardant coating such as finishing fire retardant paint, fire retardant coating components, fire-resistant coating for steel structure; all kinds of fire-proof materials such as fire retardant material and its products, textile, fire retardant fabric, building materials and products, flooring material and external wall thermal insulation system; all kinds of fireproofing components such as fireproof panel, fire door, fire resistant window frame, fire resisting shutter, fireproofing glass, elevator landing door,ventilating duct, fire-proof sealing material and fire protection smoke exhaust fan. The main indicators to judge fire resistance are: Flame retardency, ignition,production of toxic gases, smoke density,heat release and exhaust gas; fire resistance, combustion performance, heat of combustion, fire-resistant performance, high temperature resistance, fire rating, etc. There are some specific parameters which need to be judged by a professional testing equipment. You can go to the inorganic laboratory to check. The test results of fire rating are accurate.
- Q:The introduction to alkali-resistant glass fiber mesh cloth
- Alkali-resistant fiberglass mesh alkali or alkali glass fiber woven fabric is based by alkali-resistant coating, the product is excellent in strength, adhesion, docile nature, positioning, which is widely used in enhanced wall and thermal insulation and waterproof of external wall.
- Q:What are the characteristics of aluminum foil?
- (1) the aluminum foil surface is extremely clean, sanitary, any bacteria or micro-organisms can not grow on its surface.
(2) is a non-toxic aluminum foil packaging material, it can be in direct contact with food without any hardship can be harmful to human health.
- Q:With what to cut fiberglass mesh?
- When grinding, fiberglass will burn easily, thus make cutting machine overload and burn down. And the coking will binded on grinding wheel, thus causing grinding wheel lose grinding capacity and cutting glass fiber into powder. Use round saw bit instead of steel bit. Then the coking glass fiber will heat and burn down the fiber. So the frictional resistance is very big, and reduces friction force between blade and glass fiber. The main reason of using grinding wheel to cut is that the cutting machine will not be overloaded and damaged.
- Q:How to level the aluminum foil with the thickness less than 0.1? Dose the stretch bender useful?
- It has constant tension mode and elongation control mode, but the prior condition is roll container setted well and the quality is from the thickness of 0.when tension level, the number reduced to zero and the roller should be flexible.the basic mode is used for the extention control mode and the number reach to 2%. The quality is related to the design of stretch bending.
- Q:What are the differences between thermal insulation material and refractory?
- Just as its name implies, Thermal insulation means that it doesn't conduct heat instead it insulates heat inside, while refractory means resistance to high temperature and it will not be out of shape or damaged due to high temperature.
- Q:What are the components of refractory clay?
- It is different from non-cement castable refractories, which does not rely on the addition of cement for combination, instead it uses chemical binder. It is refractory castable (also known as chemical bonding castable). Non-cement refractory castable takes oxide or synthetic compound ultra-fine powder or oxide sol-gel which is similar to the chemical composition of material in tungsten castable. Since the use of superfine powder or sol as binder, it has low impurity content, and therefore the refractoriness and slag erosion resistance of the castable will not be reduced. Besides, the self combination in use can help to improve high-temperature structural strength. Non-cement castable refractory is made up of refractory aggregate and powder, superfine powder of oxide or sol, trace amount of dispergator (or anti-coagulant) and proper slow acting hardener. Non-cement castable is mainly coagulated and combinated by ultrafine powder of oxide or sol, therefore, it has certain requirements for ultrafine and sol. Ultrafine powder used refers to less than 1 / zm particles. Ultrafine powder used in non-cement castables are SiO2, Al2O3, Cr2zrOz, etc. SiO micro powder is often adopted, which is the dust recycled during the smelting of metallic silicon, ferro-silicon alloy, the generation process is as follows: This recycled SiO2 powder has an average particle diameter of 0.5 pM, and it is spherical with large surface area. It is amorphous substance with high activity, so it has good bonding strength. The sol used are mainly alumina oxide and silica sol. Silica sol is made by ion exchange of sodium silicate after Na ions are removed. It can also be made after hydrolysis of ethyl silicate. There are several ways of preparing alumina sol, the easiest method is to prepare by the reaction of metallic aluminum or alchlor with hydrochloric acid.
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