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

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

Black pipe is plain steel pipe without any protective coatings. Black pipe is used for a variety of applications around the home. It is very common to see black pipe used for your natural gas line and sprinkler system lines. Since black pipe has no protective coating, it may rust easily in wet or humid environments. To stop the pipe from rusting or corroding on the outside, you should provide a layer of protection on the outside of the pipe. The easiest method is painting it.

YES. We have strong cooperation with SINOSURE

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.

ERW steel pipe, SSAW steel pipe, LSAW steel pipe, galvanized steel pipe, stainless steel pipe, casing and tubing pipe, elbow,reducer,tee,cap,coupling, flange,weldolet, Seamless steel pipe

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

Steel will be oxidized and rusted

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;5. For 40" container the max length is 11.8m.

YES WE HAVE YUANTAIDERUN Brand TOP 500 China

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.

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.

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 9223

Painted SHS (square hollow sections) and RHS (rectangular hollow sections) are high-strength cold-formed hollow steel sections that are primer painted for protection during storage and handling.

Image 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.

2-5 Tons

Yes，we can

Yuantai has a standing stock of more than 200000 tons, and the annual shipment specification is: 20*20*1.0—1000*1000*50mm， 20*30*1.0—800*1200*50mm， Φ 219— Φ 1420mm，The black, hot-dip galvanized rectangular pipe and spiral welded pipe made of q195-q460 have an existing capacity of nearly 5 million tons,After the completion of the new base in Tangshan, the total production capacity will reach 10 million tons.

The black, hot-dip galvanized rectangular pipe and spiral welded pipe made of q195-q460 have an existing capacity of nearly 5 million tons,After the completion of the new base in Tangshan, the total production capacity will reach 10 million tons.

OD Square steel pipe：10*10-1000*1000mm OD rectangular steel pipe:10*15-800*1100mmThickness square rectangular steel pipe:0.5-60mm

Certification: CE,LEED,BV,PHD&EPD,BC1,EN10210,EN10219,ISO9000,ASTMA500,ASTMA501,AS1163,JIs G3466