Question 1

How to produce Electrical Resistance Weld Pipe-ERW?

Accepted Answer

Question 2

How to produce Hot Dipped Galvanized steel pipe？

Accepted Answer

Question 3

How steel is used in buildings and infrastructure

Accepted Answer

The possibilities for using steel in buildings and infrastructure are limitless. The most common applications are listed below.For buildingsStructural sections: these provide a strong, stiff frame for the building and make up 25% of the steel use in buildings.Reinforcing bars: these add tensile strength and stiffness to concrete and make up 44% of steel use in buildings.       Steel is used because it binds well to concrete, has a similar thermal expansion coefficient and is strong and relatively cost-effective. Reinforced concrete is also used to provide deep foundations and basements and is currently the world’s primary building material.Sheet products: 31% is in sheet products such as roofing, purlins, internal walls, ceilings, cladding, and insulating panels for exterior walls.Non-structural steel: steel is also found in many non-structural applications in buildings, such as heating and cooling equipment and interior ducting.Internal fixtures and fittings such as rails, shelving and stairs are also made of steel.        For infrastructureTransport networks: steel is required for bridges, tunnels, rail track and in constructing buildings such as fueling stations, train stations, ports and airports. About 60% of steel use in this application is as rebar and the rest is sections, plates and rail track.Utilities (fuel, water, power): over 50% of the steel used for this application is in underground pipelines to distribute water to and from housing, and to distribute gas. The rest is mainly rebar for power stations and pumping houses.

Question 4

Can we get the some samples?Any charges?

Accepted Answer

Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.

Question 5

How do you make our business long-term and good relationship ?

Accepted Answer

A: 1.We keep good quality and competitive price to ensure our customers' benefit.2.We respect every customer as our friend and we sincerrly do business and make friends with them, no matter where they come from.

Question 6

Which Certificate YuanTaiDeRun Can Provide?

Accepted Answer

EN210 EN219 BC1 API  UL  ISO FPC CE EPD PHD JIS3466 GB

Question 7

Do you have aftermarket service?

Accepted Answer

Quality/Quantity Claims: The Buyer is entitled to make both quality and quantity claim in writing against the Seller within 90 days after arrival at the port of destination.

Question 8

How about quality control in YUANTAIDERUN factory?

Accepted Answer

We have a professional laboratory,And professional testing personnel.

Question 9

Why most people choose YUANTAIDERUN?

Accepted Answer

YUANTAIDERUN GOOD QUALITY GOOD PRICE GOOD SERVCE.

Question 10

How long is your delivery time for natural black carbon steel pipe?

Accepted Answer

Generally it is 3-5 days if goods are in stock. or around 25 days if the goods are not in stock and it is according to order requirement.

Question 11

Can you hot-dip galvanized steel?

Accepted Answer

mage result for Hot dip galvanized square steel pipeIn long-term, continuous exposure, the recommended maximum temperature for hot-dip galvanized steel is 200 °C (392 °F), according to the American Galvanizers Association. The use of galvanized steel at temperatures above this will result in peeling of the zinc at the inter metallic layer.

Question 12

What is RHS and SHS?

Accepted Answer

Painted SHS (square hollow secions) and RHS (rectangular hollow sections)are high strengh cold-formed hollow steel sections that are primer painted fo protection duing storage and handling

Question 13

What Is The Corrosion Of Structural Steel?

Accepted Answer

The corrosion of structural steel is an electrochemical process that requires the simultaneous presence of moisture and oxygen. In the absence of either, corrosion does not occur. Essentially, the iron in the steel is oxidised to produce rust, which occupies approximately 6 times the volume of the original material consumed in the process. The general corrosion process is illustrated here.As well as general corrosion, there are various types of localised corrosion that can also occur; bimetallic corrosion, pitting corrosion and crevice corrosion. However, these tend not to be significant for structural steelwork.The rate at which the corrosion process progresses depends on a number of factors relating to the ‘micro-climate’ immediately surrounding the structure, principally the time of wetness and the atmospheric pollution level. Because of variations in atmospheric environments, corrosion rate data cannot be generalised. However, environments can be broadly classified, and corresponding measured steel corrosion rates provide a useful indication of likely corrosion rates. More information can be found in BS EN ISO 12944-2 and BS EN ISO 9223The components of steel structure shall be painted with primer and sealing paint at the production site, and then painted with intermediate paint and fluorocarbon paint (gray) at the construction site, and the color of the paint will become gray. After assembly, apply "top coat" and "top coat" for six times to achieve the best anti-corrosion effect.

Question 14

What Is Argon-Oxygen Decarburization?

Accepted Answer

A process for further refinement of stainless steel through reduction of carbon contentThe amount of carbon in stainless steel must be lower than that in carbon steel or lower alloy steel (i.e., steel with alloying element content below 5%). While electric arc furnaces (EAF) are the conventional means of melting and refining stainless steel, AOD is an economical supplement, as operating time is shorter and temperatures are lower than in EAF steelmaking. In addition, using AOD for refining stainless steel increases the availability of the EAF for melting purposes.Molten, unrefined steel is transferred from the EAF into a separate vessel. A mixture of argon and oxygen is blown from the bottom of the vessel through the melted steel. Cleaning agents are added to the vessel along with these gases to eliminate impurities, while the oxygen combines with carbon in the unrefined steel to reduce the carbon level. The presence of argon enhances the affinity of carbon for oxygen and thus facilitates the removal of carbon.

Question 15

What Is Alloy Steel?

Accepted Answer

An iron-based mixture is considered to be an alloy steel when manganese is greater than 1.65%, silicon over 0.5%, copper above 0.6%, or other minimum quantities of alloying elements such as chromium, nickel, molybdenum, or tungsten are present. An enormous variety of distinct properties can be created for the steel by substituting these elements in the recipe.

Question 16

DO YOU HAVE YOUR OWN BRAND NAME?

Accepted Answer

YES WE HAVEYUANTAIDERUN Brand  TOP 500 China

Question 17

What Shipping Method YUANTAIDERUN Use?

Accepted Answer

1. OD 219mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles2. above OD 219mm in bulk or according to custom opinion3. 25 tons/container and 5 tons/size for a trial order;4. For 20" container the max length is 5.8m;

Question 18

Why Does Steel PIPE Rust？

Accepted Answer

Steel will be oxidized and rusted，so Oiling and wrapping can protect steel pipe from rust

Question 19

What Is YUANTAIDERUN Terms Of Payment?

Accepted Answer

TT, L/C(For big order,30-90 days can be acceptable).

Question 20

Which Available Steel Products From Tianjin YUANTAIDERUN Have?

Accepted Answer

square steel pipe,rectangular steel pipe,ERW steel pipe, SSAW steel pipe, LSAW steel pipe, galvanized steel pipe, seamless steel pipe,stainless steel pipe, casing and tubing pipe,GI coil,PPGI coil etc.

Question 21

What Does RHS Mean ?

Accepted Answer

RHS stands for Rectangular Hollow Section, that is rectangular steel pipe.We also have square hollow section steel pipe, according to standard: ASTM A500 , EN10219 , JIS G3466 , GB/T6728 cold formed square and rectangular steel pipe.

Question 22

YuanTaiDeRun is a gold supplier and do trade assurance or not?

Accepted Answer

YES. We have strong cooperation with SINOSURE

Question 23

Which Certificate YuanTaiDeRun Can Provide?

Accepted Answer

CE,EN10219/EN10210,ISO9001,JIS G3466,BV,PHD,EPD

Question 24

Q195 = S195 / A53 Grade A

Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2

Q345 = S355JR / A500 Grade B Grade C

Q235 Al killed = EN39 S235GT

L245 = Api 5L / ASTM A106 Grade B

Accepted Answer

Q195 = S195 / A53 Grade AQ235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2Q345 = S355JR / A500 Grade B Grade CQ235 Al killed = EN39 S235GTL245 = Api 5L / ASTM A106 Grade B

Question 25

Which kind of surface coating for carbon steel pipe?

Accepted Answer

Anti-rusted oil painting,varnish painting,ral3000 painted,galvanized,3LPE, 3PP

Question 26

We can ship the regular specifications to you with LCL service.

Accepted Answer

We can ship the regular specifications to you with LCL service.

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