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 functions does fiberglass wall mesh have ?
- Fiberglass wall mesh functions well. On the one hand, it can effectively increase the tensile strength of the protective layer, on the other hand, because the stress can be effectively dispersed, it can disperse original wider cracks into smaller ones, thus reaching the effect of anti-crack. Surface coating materials and coating amount has more important significance on alkali resistance of fiberglass mesh while glass fiber has decisive significance on the long-term alkali resistance.
- Q:What is fire retardant coating mainly used for?
- Fire retardant coating is a coating which is applied to the surface of buildings and structures and can form a protective layer of fire retardancy and thermal insulation. It can reduce the flammability of the coated materials and block the rapid spread of fire so as to improve fire endurance of the coated materials. Features of fire retardant coating: (1) Fire retardant coating itself has a flame-retardancy or non-inflammability, and it can prevent the protected substrate from direct contact with the air, and delay ignition and reduce the burning speed of the objects. (2) In addition to flame retardancy or non-inflammability, the fire retardant coating itself has a a low thermal conductivity, which can delay the transfer of flame temperature to the substrate to be protected. (3) When heating, fire retardant coating decomposes non-combustible inert gas to dilute the combustible gas decomposed by the protected, making it difficult to burn or slow down the burning rate. (4) Fire retardant coating containing nitrogen will decomposite NO, NH3 and other basic groups, which compound with the organic radicals and interrupt the chain reaction so as to reduce the temperature. (5) intumescent fire retardant coating will expand and foam when heating, and form a carbon foam insulation to block the protected objects, thus delaying the transmission of heat to the substrate.
- Q:How much does mesh paving cost??
- 5 mesh number costs about ¥0.7/m2. 6 mesh numbers cost ¥1.1/m2. It costs ¥1.6/m2 of national standard.
- Q:What's the fireproof specification for constrcution external wall thermal insulation materials?
- Specification for constrcution external wall thermal insulation materials: Article 1 In order to implement the "State Council opinions on strengthening and improving fire prevention work" (state issued  No. 46), to standardize fireproof design and application of external wall thermal insulation materials of newly constructed, renovated, and expanded civil buildings and to prevent and reduce fire of building external wall thermal insulation materials, this provision is made in accordance with relevant national technical standards and our province real situation. Article 2 When there is no cavity between external wall thermal insulation material for exterior wall and base wall and between decorative layers, the insulation system shall comply with the following provisions: (A) Residential buildings: 1. When the building is higher than 54m, combustion performance of the thermal insulation material shall be A level; 2. When the building is not higher than 54m,combustion performance of the thermal insulation material shall be at least B level. When using B1 level insulation materials, non-combustible materials should be used to make the protective layer, and a protective layer thickness of the first floor of the building should be not less than 10mm, the other floors not less than 5mm; incombustible materials of more than 300mm height should be used to make horizontal fire barrier zone in every floor. (B) Other buildings in addition to residential buildings
- Q:Should the wall that has been covered by the wallpaper be pasted with Mesh?
- The price is not high, so you can paste if you like. It can make it more easy if you want to change latex in future.
- Q:What's the difference between non-backing aluminum foil and backing aluminum foil and what's the features?
- Non-backing aluminum foil is the normal aluminum foil, a piece of foil, for example, the aluminum in a bottleneck of top-grade wine. There are tiny holes in the appearance and odor is easily to be leaked. But it is soft and can cover goods in any shape. Aluminum foil with backing: adding a film-like material in normal aluminum foil, for example paper to increase the strength and decrease the leak caused by the tiny holes in the appearence of aluminum foil. The most common example is the piece of thing in cigarette box.It ahs a good sealing performance, especially for odor. 20 years ago, I am the main operator of rough mill of aluminum foil. One machine costs more than 100 million and is with more than 170 kilowatt. It's a good experience of using it.
- Q:What is the advantage of the ceramic fiber material compared with the refractory brick?
- Ceramic fiber material is heavier than refractory bricks, property of machinery operation, low heat capacity, and has high anti-stretchability and good thermal shock resistance, low thermal conductivity make its thermal insulation effect is ten times than refractory brick, it won't has crack in sudden coolness and heat, and the construction is much easier than that of refractory brick, not delaying the production.
- Q:What is rippled glass?
- The twistless roving glass fiber and its products and materials with unsaturated polyester resin as main raw materials, is similar to sinusoidal wave form and trapezoidal cross sections.
- Q:What are the fireproofing materials of the external wall included?
- Facades a fireproof material comprises three anti-cloth, fireproof cloth, plastic cloth, PVC tarpaulins, flame retardant cloth, Hair Dryers cloth, automobile tarpaulin, PVC three anti-cloth, the freight yard covered cloth, PVC coated fabric, canvas industry etc., are widely used in automobile canopy cover cloth, trains cover cloth, ships cover cloth, cloth covered open-air yard, industrial and agricultural fields; used in glass, timber, fertilizer plants, steel plants, machinery metal factory, feed mill, grain storage, container plants, oil refineries, packaging plants, paper plants, air conditioning plants, logistics, ore factory, fleet, rail, sea and so hoping to help you
- Q:There are various refractory materials inside many kilns such as refractory brick, what is the role of masonry of these refractory materials?
- When the steel is made, and wear) to complete the purpose of steelmaking, the liquid inside the kiln is melted liquid steel (1550 DEG C), erosion, only the masonry of refractory brick (melt above 1550 DEG C and has a certain strength) can resist various effects of molten steel (melting
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