Steel knowledge

Sunny Steel Collect Steel pipe and fitting Resources, they get used in many applications. Our highly-skilled manpower is dedicated to producing the finest quality steel pipe, pipe fittings, meeting a wide variety of material specifications.

  • ASTM A335 P22 alloy steel pipe
    ASTM A335 P22 alloy steel pipe
SunnySteel is a merchant exporter and supplier of alloy steel pipes and alloy steel tubes used for many different purposes.

ASTM A213 tubes

banner_astm-a213-t9ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

ASTM A335 pipes

banner_astm-a333-p22-stockASTM A335 Pipe (ASME S/A335, Chorme-Moly) is a seamless ferritic Alloy-Steel Pipe for high temperature service.

ASTM A333 pipes

banner_astm-a333-pipeASTM A333 Pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.

Properties of the Ceramic-lined Steel Composite Pipes

ASTM A213M-09


ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

What is AISI steel?


SAE International, as a standards organization, maintains several alloy numbering systems, one of which, for steel grades, is the SAE steel grades system. In the 1930s and 1940s the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels.

Use of Ceramic-Lined Steel Composite Pipe

The liquid pipe transport has been widely used in the industries of electric power, metallurgy, coal, petroleum, chemical engineering, building materials, mechanism and so on.

How better packaging the abrasion resistant pipe


There are probably hundreds of different methods for packing a abrasion resistant pipe and Elbows, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.

Alloy Steel Seamless Pipes


We are specialized in offering precision engineered alloy steels, which are used in various engineering applications and can be availed in various grades like.

Seamless steel tubes for low-temperature service

banner_astm-a333Low temperature service seamless pipes are application for low-temperature pressure container piping by the main standard GB/T18984-2003, ASTM/ASME A/SA333 with steel grade 16MnDG, 10MnDG, A333 Gr.1, A333 Gr.6, A333Gr.3.

ASTM Standard of Steel pipes


ASTM Standards can be purchased as a digital library subscription or indivi

What is the meaning of ASTM standard?


ASTM International, known until 2001 as the American Society for Testing and Materials (ASTM), is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services.

Welded Pipe vs. Seamless Pipe


Welded vs. seamless. It’s a debate that’s been around for a long time, and it’s still going strong today.

Round tubes


Round tubes are round, cylindrical shapes that are hollow. Round tubes have a wide variety of structural and architectural applications. Unlike pipes, tubes are measured by their outside diameter and their wall thickness.

Self-propagating High-temperature Synthetic process





ASTM A333 pipesdually from ASTM and other qualified standards providers.

A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders, masses of small solids. It can also be used for structural applications; hollow pipe is far stiffer per unit weight than solid members.

  DOM Tubing


DOM Tubing (Drawn over Mandrel) is a cold drawn 1020 / 1026 electric resistance welded tube with all the flash removed prior to cold drawing. In comparison to other tubing, DOM tubing is produced to more exact OD and ID tolerances, and has the highest weld strength possible.


A tube, or tubing, is a long hollow cylinder used to convey fluids (liquids or gases).

Carbon Steel Seamless Pipes


Exporter and supplier of Carbon Steel Seamless Pipes, Carbon Steel Seamless tubes, carbon steel tubes, Black and Hot-dipped Zinc-coated Steel Pipes Seamless, Seamless Carbon Steel for High Temperature Service

Chrome Moly Alloy A213, SA213 Heater Tubes


Sunny Steel is a premier worldwide supplier for all your Chrome Moly Alloy A213 / SA213 Heater Tubes needs.

How to calculate a steel pipe theoretic weight

bg_steelpipeThe weight of a pipe depends on the weight density of the material that composes the pipe as well as the physical volume of the pipe.

EN 10204 3.1 Certification Vs EN 10204 3.2 Certification


EN10204 is a Euronorm (issued by the European Community) specification that describes different types of material test reports and certifications.

What is the Difference Between A53 Pipe vs A106 Pipe


Because they have different scope and specify different type of pipe, then the manufacturing process and required quality control test and inspection will be different to each other.

Welded Steel Pipe VS Seamless Steel Pipe


Pipes and tubings are vital elements in upstream oil and gas. From control lines to electrical lines, tubings can be used in diverse applications. In deepwater environments, coiled tubings could run up more than 70,000 feet to produce hydrocarbon.

What is DOM tubing used for


DOM Steel Tube is produced using uniformly high quality C1020 steel strip and is formed and electric resistance welded into its basic shape.

Wear-resistant ceramic-lined composite pipe performance which?


Wear-resistant ceramic lining composite pipe using the main technology is the centrifugal casting composite ceramic technology.

Heavy Wall Seamless Carbon Pipe


Seamless (SMLS) pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell. Seamless Steel Pipe withstands pressure better than other types of pipe, which is why it is the favorable choice for oil and gas transportation.

ASTM A335 Seamless Ferritic Alloy Steel Pipe for High-Temperature Service for High-Temperature Service


Astm A335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service

ASTM Seamless pipes

ASTM Standards can be purchased as a digital library subscription or individually from ASTM and other qualified standards providers.

How to packing the seamless pipe

utube-packedThere are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.


china_127-91Welcome to Sunny Steel Enterprise Ltd.

We enjoy close working relationships with our customers working with them from concept through to completion often resulting in economy of design and the cost benefits that go with it.