The Difference between Black Pipes and Carbon Pipes

What is the black pipe?

Black steel pipe is made of steel that had not been galvanized, Its name comes from the scaly, dark-colored iron oxide coating on its surface, It's used in applications that don't require galvanized steel.

What is carbon steel pipe?

Steel whose characteristics are determined by the amount of carbon it contains. And steel is considered to be carbon steel when no minimum content is specified or required for chromium, cobalt, niobium, molybdenum, nickel, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect; when the specified minimum for copper does not exceed 0.40 percent; or when the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60.

Most the steel produced in the world falls into the category of carbon steel.

3. Difference between black pipes and carbon pipes

In general "black" steel pipe and carbon steel pipe have about the same procedures for welding. That is if you are talking about general welding and not for some specific application like very cold temperatures. Black steel pipe is not really a specification but rather a generic term used primarily by plumbers to distinguish regular steel pipe from galvanized steel pipe. Most black steel pipe has a composition similar to ASTM A-53 pipe. The difference between A-53 and common steel pipe like A-106 are so close that some pipe is actually marked to meet both specifications. Black pipe and A 53 can be seamless or welded seam while A 106 is seamless.

Prime In Stock ERW Steel Pipe 2016/08/04

API 5L  GR.B, ERW Steel Pipe, Carbon Steel
Outside Diameter 外径(mm)	Wall Thickness 壁厚 (mm)	Length 长度 (mtr)	Quantity 数量		REMARK 标记 Surface, End	EXW CHINA 出厂价 USD/TON 美金每吨
			PCS 根数	TON 吨位
355.6	7.5	12	128	98.89	BE BARE	$431.55
508	9	12	58	77.08		$449.19
139.7	5.1	6.5	87	9.57	PE.BLACK	$412.55
168.3	6.1	11.95	50	14.58		$417.98
73	5.16	8.63	5.80	20.00		$417.98
88.9	5.49	11.29	5.80	20.00		$423.41
101.6	5.74	13.57	5.80	20.00		$389.48
114.3	6.02	16.07	5.80	20.00		$403.05
141.3	6.55	21.77	5.80	20.00		$428.84
168.3	7.11	28.26	5.80	20.00		$409.84
API 5L/A53 GR.B, ERW Steel Pipe, Carbon Steel
Outside Diameter 外径(mm)	Wall Thickness 壁厚 (mm)	Length 长度 (mtr)	Quantity 数量		REMARK 标记 Surface, End	EXW CHINA 出厂价 USD/TON 美金每吨
			PCS 根数	TON 吨位
42.3	3.75	6	500	50	BLACK	$426.94
48.3	4.25	6	600	60		$400.00
73	7.00	6	659	16		$437.71
88.9	6.00	6	320	20	BE. BLACK	$436.36
139.7	7.75	6	154	8		$441.75
244.5	8.00	6	158	20		$447.14
114.3	6.00	6	168	18		$409.43
168.3	8.75	6	145	30		$424.24
219	8.18	6	63	6		$416.16
273	7.75	6	49	15		$443.10
33.4	3.50	5.8	530	7.93	PE.BLACK	$425.30
42.3	3.75	5.8	695	16.85		$430.77
48.3	3.25	5.8	563	15.86		$406.15
60.3	4.00	5.8	981	47.94	BE. BLACK	$417.09
73	4.80	5.8	658	52.06		$434.87
88.9	5.25	5.8	453	52.98		$417.09
114.3	6.00	5.8	369	69.77		$415.73
168.3	9.75	5.8	698	340.59		$440.34
219	6.80	5.8	369	181.20		$418.46
273	8.00	5.8	690	533.88		$452.65
Note:  1. The above price is based on bare pipe, for extra coating, please contact sales@primesteeltube.com;           2. The above price is based on EXW, for FOB/CIF/CFR price, please contact sales@primesteeltube.com;           3. The above price is not including any packing and end processing charge, for detailed quotation, please contact sales@primesteeltube.com;           4. The above price is only valide during June 3-10;           5. The applicapable MOQ for this price list is over 100 tons;

Galvanized Steel Pipes

Galvanized Steel Pipes Specification

Product Type: ASTM A106 Gr.B

Product Name: 10 inch STD astm a106 gr.b galvanized steel pipe

10 inch STD astm a106 gr.b galvanized steel pipe

size: 10 inch, DN250, 273mm galvanized ERW steel pipe

Material: ASTM A106, 20#, Q235, STPY41, STPG38, STB30, STB33, STB35, STPT42 etc

Wall Thickness: STD, 8.18mm

Standard: ASME/ANSI B26.10M

Type: astm a106 gr.b galvanized steel pipe

Size:

Seamless Pipe: 1/2”~24”, DN15~DN600, OD21.3MM~609.6MM, WT: 1-60mm

LSAW pipe: 1/2″-48″, DN15-DN1200, OD21.3-1219.2MM, WT: 1-60mm

SSAW pipe: 1/2″-48″, DN200-DN3600, OD: 219.1-3657.6mm, WT: 6-36mm

Wall thickness

SGP, STD, SCH40, SCH80, SCH160. XS, XXS and so on.

Standards

ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M—1996, DIN2605 / 2615 / 2616, JIS P2311/2312

Material

ASTM A106, A53GRB, A53-A, A106-A, A192, A226, A315-B, A106-B, A178-C, A210-A-1,

A210-C, A333-1.6, A334-1.6, A333-7.9, A334-7.9, 150M19, En46..

API 5L X42, X52, X60, X65, X70

Length: 6-12m

Industrial process

hot rolled, hot expanded, cold drawn, and hot galvanized

Surface treatment

Transparent oil, rust-proof black oil or hot galvanized

Galvanized Steel Pipes Usage

Water Pipelines, Agriculture and Irrigation (Water Mains, Sewerage Systems, Industrial Water Lines, Plant Piping, Deep Tube-Wells & Casing Pipes). Other popular application area includes usage in gas pipe lines (pipe lines for natural gas, LPG and other non-toxic gases).

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

Large diameter pipes

Large diameter pipes (Carbon Pipes) Specification

Large diameter, mill certified API linepipe from 323.9 mm outside diameter through to 1220 mm outside diameter in varying wall thicknesses. All stock to a minimum of 350 MPA physical yield stengths.

High Quality S.A.W Spiralweld Pipes

600mm – 3000mm Diameter.

Product Type: ASTM A106/A53 GR.B

Product Name: 14 inch LSAW Large diameter welded carbon steel pipe

14 inch LSAW Large diameter welded carbon steel pipes

size: 14 inch, DN350, 355.8mm LSAW Large diameter welded carbon steel pipes

Outer diameter: ASTM 355.8mm, DIN 355.6mm, JIS 355.6mm 14 inch steel pipe

Material: ASTM A106 GR.B, ASTM A53 GR.B, 20#, Q235, STPY41, STPG38, STB30, STB33, STB35, STPT42 etc

14 inch LSAW tube Large diameter welded carbon steel pipe

Standard: ASME B36.10M /ANSI B36.10M, API, GB, SH, HG, MSS, JIS, DIN etc

14 inch LSAW steel pipe Thickness: DIN 8mm, JIS 7.9mm, ASME 6.35, 7.92, 9.52, 11.1315.09, 12.70, 19.05, 23.83, 27.79, 31.75, 35.71mm

Thickness Tolerance: ±12.5%

Length: Min 3 Meters, Max12 Meters, or according to customer’s requirement

Ends: Beveled/Straight cut, Plastic or Metal ends protetcors

Coating: Black painting/Vanish painting 3PE coated etc

Marking: According to standard or according the customer’s requirement

Large diameter pipes (Carbon Pipes) Usage

Fluid, boiler, hydraulic, gas, oil, chemical fertilizer, structure pipes etc.

For low pressure liquid delivery such as water, gas and oil Alpine zone, the sea, the city densely populated areas.

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

How to Clean a Steel Pipe

Cleaning the inside of the steel pipe

Run after through the inside of the pipe. This can be done in a sink if the pipes is small enough. Use a water hose outside if the pipe is too big to fit in the sink. Tilt and twist the pipe. While the water is running, tilt it so the water run against the inside of the pipe. Twist the pipe so the water cleans off the sides of the pope, use a scrub brush saturated with soapy water to scrub the inside of the pope. If the pipe is too narrow to fit your hand though, use a baby bottle brush to clean the inside, Rinse the pipe with clean water and allow to dry. 

Cleaning the outside of the steel pipe

Saturate a soft cloth with distilled white vinegar and wipe the outside of the pipe with the cloth. Rinse the outside of the pipe with warm soapy water. Soak paper towels in baby oil and clean the outside of the pipe with them.  The baby oil will make the pipe shine like new. Spray a water displacing formula onto a cloth and wipe the pipe down. The water displacing formula will not only clean the pipe, but it will also in protecting the pipe from future marks.

Polishing the steel pipe

Apply a small amount of metal polish to a microfiber rag. Rub the microfiber rag gently across the surface of the pipe to distribute the polish evenly. Make sure the polish does not get too much thick on the pipe. Rub the surface of the pipe gently with a clean microfiber cloth to work off any excess polish. Buff the surface of the pipe and allow to dry.

Cold- draw Steel Pipe Production Process

The cold- draw steel pipe production process:

The cold-draw steel pipe production process involves combining cold-rolled and cold-draw

processes in the production process. The advantage of cold-rolled uses simple equipment, has a low cost, and easy operation and maintenance, but has many working procedures and produces low yield. Using cold-draw process requires more complex equipment and more investment, but has a simple procedure and high yield. Especially for high-precision seamless steel tubes and thin-walled seamless tubes.

Due to the limited count and cost of a rolling mill, the finished product specification is less. The product produced with cold-rolled and cold-draw have many advantages: high quality, short processing cycle time, reduced intermediate degreasing, heat treatment, faint, favoring straight processes, saves energy, reduces metal consumption, has less raw material specifications and so on.

For tube pickling can use sulfuric acid, hydrochloric acid, mixed acid, hydrofluoric acid. Carbon structural steel and alloy seamless steel pipe better to use sulfuric acid, high-quality carbon structural steel and alloy steel precision seamless suitably hydrochloric acid, high chromium Cr and Ni Ni high-alloy seamless steel pipe preferably sulfuric acid, hydrochloric acid, nitric acid and mixed acid wash, austenitic stainless steel tube is appropriate to hydrofluoric acid.

API 5L Steel Pipe Delivery

As we all know, the handling of round welded pipes is very important job, because will be many and many times of transfer during the whole production process, so even little damage of pipe surface of beveling will lead to the final big damage to pipes.

Steel pipe delivery 1 - In stack

Steel pipe delivery 2 - End protection

Put plastic end caps or steel end protector to our pipes ends to avoid damage of pipe beveling.

Steel pipe delivery 3 - Loading and shipping

Using the bridge crane to carry your APL 5L Line pipe, and load mild pipe into long trucks whenever you need pipes. As we mention above, we will apply standard handling procedure to protect all your line pipe. Besides, strict practice of pipe carrying also ensure the safety of our workers.