2015/12/17

UAE Clients visit for Stainless Steel Pipe and Fittings

Warmly welcome our UAE clients visit our company for our future cooperation. 

Shinestar Holdings Group has the ability to offer you stainless steel pipes and fittings. We are specialized in offering combined project solution for stainless steel pipes and fittings. Stainless steel pipe is an important product in the steel industry, and it is widely applied in the national economy. Such as widely used in hot and cold water transmission, drinking water supplying, heating equipment, air conditioning facilities, fire protection, gas and other civil low pressure liquid, petroleum, chemicals pharmaceuticals, beverages transportation. Because the stainless steel tube / stainless steel pipe is a hollow cross-section, it is suitable for liquids, gases and solids pipelines. Compared with other type of steel pipe, stainless steel pipe has largebending torsional strength, so it has become an important material for mechanical and architectural structures. 304 stainless steel pipe is widely used in curtain wall, side walls, roof and other construction purposes. In certain atmosphere, 316 stainless steel pipe is better. Stainless Steel Pipe and Stainless Steel Tube is safe and reliable, simple and convenient pipeline, it has more irreplaceable advantages. 
304 Stainless Steel Pipes and Tube Weight Count:(Just for 304) 
Weight(Kg/M)=(D-S)*S*0.02490
D:Outside Diameter S:Wall-Thickness
304 Stainless Steel Pipes Chemical Requirements

C max
Mn max
P max
S max
Si
Cr
Ni
Mo
N
304
0.08
2.00
0.045
0.030
1.00
18.0-20.0
8.0-11.0
...
...
304L
0.035
2.00
0.045
0.030
1.00
18.0-20.0
8.0-11.0
...
...
304H
0.04-0.10
2.00
0.045
0.030
1.00
18.0-20.0
8.0-11.0
...
...
304N
0.08
2.00
0.045
0.030
1.00
18.0-20.0
8.0-11.0
...
0.10-0.16
304LN
0.035
2.00
0.045
0.030
1.00
18.0-20.0
8.0-11.0
...
0.10-0.16


304 Stainless Steel Pipe Mechanical Test

Tensile(Mpa)
Yeild(Mpa)
Elongation(%)
Hardness
304
515
205
35
90HRB
304L
485
170
35
90HRB
304H
515
205
35
90HRB
304N
550
240
35
90HRB
304LN
515
205
35
90HRB

Packing:Delivery Condition : 
As different requirements,It including bright annealing,pickling,etc.
1.Standard Packing
2.Woodbox Packing
Other Test: 
1.Hydrostatic or Nondestructive Electric Test
2.Marking
3.Grain Size,etc

          

Structural Steel Pipe Standard

Structural Steel Pipe can accommodate many different applications including bollards and bumper posts, structural columns, shoring, fencing, piling, racks and rollers. Structural Steel Pipe
mainly used for factories, bridges, ships and other structures. Structure Steel Pipe includes various seamless steel pipe or welded steel pipe for structure, pile pipe, large diameter seamless
steel pipe, large diameter submerged arc welded steel pipe, large diameter seamless steel pipe, large diameter thick wall thickness steel pipe etc.

STANDARD:

Chinese National Standard: GB/T8162

American Society for Testing and Materials Standard: ASTM A53

American Boiler and Pressure Vessel Code: ASME SA53

STEEL GRADE: 10 ,20 ,35, 45, Q345, 15CrMo, 12Cr1MoV, A53A, A53B, SA53A, SA53B


Seamless Steel Pipe for Structure:

Seamless Steel Pipe for Structure is used seamless steel pipes or seamless steel tubes for general structure and mechanical structure. For the manufacturer of pipes, containers,
equipment, fittings and mechanical structure seamless steel pipe.
Specification:
Outside Diameter: 10.3mm ~ 1013mm
Wall Thickness: 1.7mm ~ 52mm



Welded Steel Pipe for Structure:

Welded steel pipe used in steel structures, bridges, support, building structure pipe, pile pipe. Since the structure steel pipe or structure steel tube requires a lot of pressure.
Structural steel pipe requires high pressure capabilities which means only the steel pipes has greater wall thickness (> 8mm) can be applied as structure steel pipe.
Type of Pipes:
1. LSAW Steel Pipe - Logitudinal Submerged Arc Welded Steel Pipe
2. SSAW Steel Pipe - Spiral Submerged Arc Welded Steel Pipe
3. SAWH Steel Pipe - Submerged Arc Welded Helical Steel Pipe
Specification:
LSAW Steel Pipe: Outside Diameter: 406mm ~ 1625mm, Wall Thickness: 6.0mm ~ 75mm
SSAW Steel Pipe/SAWH Steel Pipe: Outside Diameter: 219mm ~ 4064mm, Wall Thickness: 3.2mm ~ 40mm


The difference between hot-dipped galvanized steel pipe & cold galvanized steel pipe

Galvanized Steel Pipe

In order to improve the corrosion resistance of the steel pipe, in general people will coated the steel pipe with zinc. Galvanized steel pipe is mainly used for transporting gas and heating.
If use galvanized steel pipe as water pipes for drinkable water, after many years of application, it turns out there are many rust inside the steel pipe which will influence the quality of the
drinking water.

Galvanized Steel Pipe Weight Formula: ( Outside Diameter - Wall Thickness) x Wall Thickness x 0.02466 * 1.0599 = Weight per Meter (kg / m)

There are two types of galvanized steel pipe in the market which is divided by the production processes.

Hot-dipped Galvanized Steel Pipe:

Hot-dipped zinc coating is the molten metal to react with the iron matrix alloy layer. So the substrate and the zinc coating combined well. The first production step is pickling the steel pipe.
In order to remove the surface of the iron oxide, cleaning bath by mixing an aqueous solution of ammonium chloride or zinc chloride aqueous solution for the after pickling steel pipe is
needed. And then the steel pipe is allowed to put in the hot dip tank. The using advantage for hot dipped galvanized steel pipe is the coating has strong adhesion and long using life.
Applying hot-dipped galvanizing process, the zinc coating will be combined with the surface of the steel pipe evenly.

Production Process:

Material Inspection (Steel Pipe) --- Hanging --- De-greasing --- Rinsing --- Pickling --- Washing --- Dipping Fluxing --- Hot Air Drying --- Inside and Outside Hot-dipped Galvanizing Blow
--- Cooling --- Passivation and Rising --- Unloading --- Inspection and Trimming --- Type Identification --- Packaging and Storing and Transportation.

Cold Galvanized Steel Pipe:

Cold Galvanizing process is also named as electro-galvanizing process which is using cold plates as raw material. Cold Galvanized Steel Pipe has very few zinc coating which is only around
10 ~ 50 g/m2. Compared with hot-dipped galvanized steel pipe, the corrosion resistance of cold galvanized steel pipe is not as good as hot-dipped galvanized steel pipe.
In order to ensure the quality of the galvanized steel pipe, most of the galvanized steel pipe manufacturers will not apply the electro galvanizing producing process. Only those small and
outdated manufacturers still use electro-galvanizing producing process to offer relatively cheaper galvanized steel pipe. Since the zinc layer for cold galvanized steel pipe is electroplated layer,
it is the individual layered zinc coating on the steel pipe, so the coating layer will be peel off easily. Overall, the producing cost for cold galvanized steel pipe is lower than hot-dipped
galvanized steel pipe, and the manufacturer can offer the purchaser a very competitive market price. However, the surface of the coating is uneven which influence the corrosion resistance
of the galvanized steel pipe.

Production Process:

Uncoiling (Galvanized Steel Strips/Plates) --- Leveling --- Welding --- Scraping the Scar --- Passivation and Rinsing --- Zinc adding --- Setting/Forming --- Type Identification --- Cutting
--- Packing --- Drying --- Weighed

2015/12/09

Order---ERW steel pipe shipped to Singapore

Product: ERW Steel Pipes, Carbon SteelStandard: API 5L GR.B
Specification: Outside Diameter 1''~24'', Wall Thickness: SCH40
Quantity: 10,000 meters
Surface: Black painted
Ends: Bevelled, two plastic caps with two ends
Brand: SHINESTAR
Country of Origin: China
Production Time: 25~30 days
Delivery Time: 15~25 days
Destination: Singapore


Order---Seamless Steel Pipe shipped to Brazil

Product: Seamless Steel Pipe, Carbon Steel
Standard: ASTM A106 GR.B
Specification: 219.1mm*8.18mm*5800mm, 355.6mm*9.53mm*5800mm, 88.9mm*5.49mm*5800mm
Surface: Black Painted
Ends: Bevelled, with 2 plastic caps
Quantity: 156 Tons
Production Time: 20 days
Delivery Time: 30~35 days
Destination: Brazil

Mild Steel Pipe

Mild Steel Pipe refers to the steel pipe contains less than 0.25% of Carbon (one of the important chemical property in carbon steel materials). This characateristic for mild steel pipe also influenced the steel pipe's physical properties which appread as low strength and low hardness. It includes most part of ordinary carbon steel and high-quality carbon structural steel. Mostly used in engineering structures, some carburizing heat treatment and other mechanical parts required for wear.

Mild steel pipe annealing organization ferrite and pearlite is lower its strength and hardness, ductility and toughness. Therefore, the cold formability is good and can be crimping, bending, punching and other methods of cold forming. Like that mild steel pipe has good weldability. Carbon contents from 0.10% to 0.30% of mild steel is easy to appliy all kinds of processing such as forging, welding and cutting, commonly used in the manufacture of chains, rivets, bolts, shafts, etc. Mild steel pipe is generally applied for the production of building components, containers, tank, furnace and farm machinery.

Piling Pipe

Piling Pipe is widely used in coastal, river, lake area. In coastal area, there are large-scale construction for offshore deepwater terminal project which indecates large market needs for piling pipes. As the major deep water dorck pile bearing capacity, piling pipe is generally choose large diameter spiral welded steel pipes (SSAW Steel Pipes). In addition, piling pipes is widely used in bridges, roads, high-rise building ect.

Production of steel piling mainly use the double submerged arc technology. A first advantage of using the double submerged arc technique is completely automated; The second advantage is conducted under submerged arc welding, the heat exchange and protection of its relatively strong performance, high quality welding out; the third advantage is the automatic submerged arc welding arc welding flux can be used under high-current, high welding efficiency.

In order to ensure the quality and progress, to prevent damage to surrounding buildings, according to the intensity of the pre-piling pile, pile size, length and pile frame is easy to move and other factors to select the correct piling order. Common piling order generally following categories: conducted in one direction by the side from the middle to be symmetrical in both directions, from the middle to four weeks.