Cheap Price X53crmnninbn 21-9 X33crnimnn23-8 Nife25cr20nbti 1.4870 1.4866 2.4955 Stainless Steel Pipe/Tube Metal Round Pipe

• Customization: Available
• Type: Stainless Steel Pipes
• Standard: ASTM, AISI
• Model NO.: X53CrMnNiNbN 21-9 X33CrNiMnN23-8 NiFe25Cr20NbTi
• Certification: ISO
• Shape: Round
• Technique: Cold Rolled
• Surface Treatment: Polished
• Application: Construction/Indutry/Building/Chemical/Auto
• Processing Service: No.1/2b/Ba/No.4/8K/Sb/Hl/Embosses/Etched/Decorate
• Material: 200 Series/300 Series/400series
• Keyword: Welded Seamless Pipe Tube
• Transport Package: Standard Sea-Worthy Packing
• Specification: as required
• Trademark: bolaisheng
• Origin: China

Product Description

Our polished stainless steel pipe, a marvel of engineering, is a versatile hollow cylindrical steel that boasts extensive applications across myriad industries. From the realms of petroleum, chemical, and medical to the culinary and light industrial sectors, and even mechanical instrumentation, this pipe shines as a beacon of strength and utility. Celebrated for its robust strength in both bending and torsion, yet delightfully lightweight, it stands as the ideal choice for crafting mechanical parts, engineering structures, and even elegant furniture kitchenware.
Based on its composition, this remarkable stainless steel can be categorized into several distinctive series: the Cr series (400 series), the Cr-Ni series (300 series), the Cr-Mn-Ni series (200 series), the heat-resistant chromium alloy steel (500 series), and the illustrious precipitation hardening series (600 series). Each series offers unique characteristics and specialized uses.
200 series: A blend of chromium, manganese, and nickel, offering a unique balance of properties.
201, 202, etc.: In these grades, manganese replaces nickel, resulting in relatively lower corrosion resistance. Despite this, they have found favor as a cost-effective alternative to the 300 series in China, catering to budget-conscious applications.
300 series: Comprising chromium-nickel austenitic stainless steel, this series is renowned for its exceptional resistance to corrosion and versatility across diverse applications.
304: Recognized as the general model, this 18/8 stainless steel is the epitome of versatility. Its applications span a vast array, including corrosion-resistant containers, tableware, stylish furniture, protective railings, and essential medical equipment. With a standard composition of 18% chromium and 8% nickel, it is a non-magnetic stainless steel that retains its structure post-heat treatment. The GB classification for this powerhouse is 06Cr19Ni10.
304 L: Sharing the same formidable characteristics as 304, this variant features low carbon, enhancing its corrosion resistance and ease of heat treatment. While it may exhibit reduced mechanical properties, it excels in welding applications and products that are challenging to heat treat.
304 N: Building on the characteristics of 304, this nitrogen-infused stainless steel boasts increased strength, courtesy of the added nitrogen element.
309: This stainless steel variant surpasses 304 in temperature resistance, comfortably withstanding temperatures up to 980°C, making it ideal for high-temperature applications.
309 S: Enriched with ample chromium and nickel, it showcases outstanding heat and oxidation resistance. It serves as the backbone for products such as heat exchangers, boiler components, and jet engines.
310: A paragon of high-temperature oxidation resistance, this stainless steel can endure the grueling demands of temperatures soaring up to 1200°C, making it indispensable in extreme heat environments.
316: As the second most widely used steel grade following 304, this versatile variant is pivotal in the food industry, watch accessories, pharmaceuticals, and surgical equipment. Enhanced with molybdenum, it features a specialized corrosion-resistant structure. Its superior chloride corrosion resistance over 304 designates it as "marine steel," frequently employed in nuclear fuel recovery devices. The 18/10 stainless steel grade typically aligns with this application level.
316 L: This low-carbon iteration offers heightened corrosion resistance and is easily heat-treated, making it ideal for chemical processing equipment, nuclear power generators, and refrigerant storage tanks.
410: Known as martensitic high-strength chromium steel, it offers commendable wear resistance but falls short in corrosion resistance, making it suitable for specific applications.
420: Hailed as "Tool-grade" martensitic steel, it mirrors Brinell high-chromium steel and holds the distinction of being the pioneering stainless steel. Its application in surgical knives showcases its ability to be polished to a radiant brightness.

Product name	X53CrMnNiNbN 21-9 X33CrNiMnN23-8 NiFe25Cr20NbTi 1.4870 1.4866 2. 4955 Stainless Steel Pipe Round Steel Pipe Welded Pipe Price
Specification &Standard	ASTM/ASMES A312 GR. TP304, 304L, 304H, 310S, 310H, 316, 316L, 347, 347H snd etc;ASTM/ASMES A358 CL1&CL3 GR. 304, 304L, 304H, 310S, 310H, 316, 316L, 347, 347H snd etc;Duplex ASTM / ASME SA 790 UNS NO S31803 , S32205 and etc.Inconel ASTM B444 UNS06625 , Incoloy ASTM B423 UNS08825 Hastelloy C276, Monel 400,ASTM B111 C68700, C44300, C70600, C71500,
Outside diameter	6mm-3000mm
W.T.	0.5-100mm
Length	1. Single Random Length and double Random Length.2. SRL: 3M-5.8M   DRL: 10-11.8M or As clients requested length3. Fixed length (5.8m, 6m, 12m)
Pipe Ends	Under 2 inch plain end. 2 inch and above Beveled. Plastic caps (small OD). Iron protector (large OD).
Surface Treatment	black paint, varnish, oil, galvanized, anti-corrosion coated.
Marking	Supply Logo + Standard + Size(mm) + HEAT NO +or as your requirement
Test	Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing , X-ray Test, HIC & SSC test, etc. or as your requirment
Brand	JIULI, WUJIN, ZHONGDA, GAOLIN, GANGYI, DEWEI, ZHANGYUAN etc or as your requirment
Certificates	API, ISO, SGS, BV, CE, PED, KOC, CCRC, PDO and etc.
Advantages	1. Abundant stock and prompt delivery2. Reasonable for whole packages and processes.3. 15 years' QC team service & sales management API& ASTM trained engineers.4. More than 150 customers spread worldwide. (Petrofac, G.S Engineer, Fluor, Hyundai  Heavy industry, Kuwait National Oil, Petrobras, PDVSA, PetroEcuador, SHELL, etc.)

Chemical Element Content (%)

X53CrMnNiNbN 21-9 Chemical element content (%)
Element	C	Si	Mn	P	S	Cr	Ni	N	More
Min	0.48	-	8	-	-	20	3.25	0.38	Nb+Ta:2~3 C+N>0.9
Max	0.58	0.45	10	0.045	0.03	22	4.5	0.5

X53CrMnNiNbN21-9 Mechanical properties
Condition	Heat treatment or state	Tensile strength σb Mpa	Yield point σs Mpa	Elongation after fracture or elongation δ %	Sectional shrinkage ψ %	Hardness HBW
Steel	Controlled cooling	≈ 1300				HB: ≈ 385
Steel	+Q1000~1100	≤1300				HB: ≤ 385
Steel; d≤40	=+AT+P	950 to 1150	580	8	10	HRC:30
d = thickness; +A = soft annealing; +Q = quenching; +P = precipitation hardening; +AT = solution annealing; +QT = quenching and tempering; the suffix number of the heat treatment symbol indicates the temperature/°C  For austenitic materials, in controversial cases, the tensile strength value should be decisive.  This heat treatment condition is suitable for hot extrusion processing.  This heat treatment condition is suitable for resistance heating rough processing.  These values are near the lower limit of the scattering range.  Hardness values may be displayed, which cannot be converted into tensile strength values according to the standard tables commonly used in laboratories. Therefore, in controversial cases, only the tensile strength value should be considered valid.

X33CrNiMnN23-8 Chemical element content (%)
Element	C	Si	Mn	P	S	Cr	Ni	N	W
Min	0.28	0.5	1.5	-	-	22	7	0.25	-
Max	0.38	1	3.5	0.045	0.03	24	9	0.35	0.5

X33CrNiMnN23-8 Mechanical properties
Condition	Test temperature	Heat treatment or state	Tension strength σb Mpa	Yield point σs Mpa	Elongation after fracture or elongation δ %	Sectional shrinkage ψ %	Hardness HBW
Steel	Room temperature	Controlled cooled	≈1250				≤360
Steel	Room temperature	Quenched at 1000°C to 1100°C	≈1200				≤360
Steel; d≤40	Room temperature	+AT +P	850~1100	≥550	≥20	≥30	HRC≥25*
Steel	500°C	+AT +P	≥600	≥270
Steel	550°C		≥570	≥250
Steel	600°C		≥530	≥220
Steel	650°C		≥470	≥210
Steel	700°C		≥400	≥190
Steel	750°C		≥340	≥180
Steel	800°C		≥280	≥170
+QT = quenched and tempered; +AT = solution annealed; +P = precipitation hardened;+A=Soft annealed *Austenitic grades X55CrMnNiN20-8 to X33CrNiMnN23-8 may show hardness values which cannot be converted into tensile strength values acording to the standard tables commonly used in laboratories. Therefore, in cases of dispute only the tensile strength value shall be considered as valid.

NiFe25Cr20NbTi Chemical element content (%)
Element	Fe	C	Si	Mn	P	S	Cr	Ti	Ni	B	AI	More
Min	23	0.04	-	-	-	-	18	1	7	-	0.3	Ni: Remainder Nb+Ta: 1~2
Max	28	0.1	1	1	0.03	0.015	21	2	9	0.008	1

X33CrNiMnN23-8 Mechanical properties
Condition	Heat treatment or state	Tensile strength σb Mpa	Yield point σs Mpa	Elongation after fracture or elongation δ %	Sectional shrinkage ψ %	Hardness HBW
Steel	+Q930~1030	≤1000				HB: ≤ 295
Steel; d≤40	=+AT+P	900 to 1100	500	25	30	HRC:28
d = thickness; +A = soft annealing; +Q = quenching; +P = precipitation hardening; +AT = solution annealing; +QT = quenching and tempering; the suffix number of the heat treatment symbol indicates the temperature/°C  For austenitic materials, in controversial cases, the tensile strength value should play a decisive role.  These values are near the lower limit of the scattering range.

Specification Table

Specification	Quantity	Specification	Quantity	Specification	Quantity
6-12×1.5-2.5	18	73×4-4.5-5-6-7-8-9-10-12-15	50	219×30-40	65
14×1.5-2.5-3	20	76×4-4.5-5-6-7-8-9-10-12-14	60	245×8-10-14-17-20-22	105
16×1.5-2.5-4	30	83×4.5-5-10	30	245×25-28-30-34-40	84
18×2.3-4-5	20	89×4.5-8-10	40	273×7-9-12-15-18-20-25	100
20×2.5-3-5	17	95×4.5-6-8	50	273×30-35-38-40	50
24×2.5-3-4-5-6	25	102×4.5-5-6-10-12-14-16-20	80	299×8-12-16-20-24-28	60
25×2.5-3-4-5-6	28	108×4.5-5-14-18-20-22	75	299×30-32-36-38-40	70
28×3-3.5-4-5-6	30	114×4.5-5-6-7-8-10-12-14-18-20	100	325×8-12-14-18-38	120
32×3.5-4-5-6-8	40	121×4.5-5-6-7-8-10-12-14-16-20	102	325×28-32-34-38	75
34×4-5-6-8	35	127×4.5-5-6-7-8-10-12-14-16-20	95	351×10-16-20-25-40	120
36×3.5-5-6-8	30	133×4.5-6-8-12-14-16-18-20-25-30	120	355×6-18-20-25-30-40	45
38×4-5-6-7-8-9-10	33	140×5-6-7-8-9	50	377×8-12-15-20-24-28	128
39×3.5-5-8-10	30	146×4.5-6-8	60	377×30-37-40	60
42×3.5-4-5-6-7-8-9-10	35	152×4.5-6-	60	402×10-20-25-30-35	70
45×3.5-4-5-6-7-8-9	40	159×4.5-6-10-12-14	80	406×10	110
48×3.5-4-5-6-7-8-9-10	24	159×16-18	30	426×10	97
51×3.5-4-5-6-7-8-9-10	60	168×8-25-30-35	130	450×10-20-25-34-40	108
56×3.5-4-5-6-7-8-9-10	58	180×8-12-16-25-30	105	480×25-30-40	95
57×3.5-5-6-7-8-9-10-12	50	180×32-34-38-40	102	500×10-34-40-45	100
60×3.5-4.5-5-6-7-8-9-12-14	60	194×6-8-25-30-40	140	510×10-25-34-40-45	110
63×3.5-4.5-5-6-7-8-9-10-12-14	40	203×6-7-10-15-20-25-30	90	530×20-30-40	140
68×4-4.5-5-6-7-8-9-10-12-14-16	35	203×32-36-40	70	560-720*6-10-24-45
70×4-4.5-5-6-7-8-9-10-12-15-16	40	219×6-8-12-16-18-20-25	110

Application Requirements
Automobile Industry
In the automotive arena, stainless steel reigns supreme, predominantly in exhaust systems, accounting for over half of the stainless steel used in vehicles. Ferritic stainless steel takes center stage, with components like the muffler and converter primarily utilizing types 409L and 436L stainless steel welded pipes. Approximately 1.5% of stainless steel pipe consumption belongs to the automotive industry, with a seamless to welded pipe usage ratio of about 2:1.
Petrochemical and Fertilizer Industry
The petrochemical industry is a voracious consumer of stainless steel pipes, particularly seamless ones. Popular specifications encompass 304, 321, 316, 316L, 347, and 317L, with dimensions ranging in outer diameters from 18mm to 610mm and wall thicknesses from 6mm to 50mm. These pipes are indispensable in applications such as furnace tubes, material transport tubes, and heat exchanger tubes, especially for medium and low-pressure pipelines.
Water and Gas Fluid Transport
Stainless steel pipes are the pinnacle of fluid transport innovation, boasting extraordinary corrosion resistance when compared to traditional cast iron, carbon steel, and plastic alternatives. These pipes and their complementary systems represent some of the world's most sophisticated water purification solutions.
As a cornerstone of the water industry, stainless steel pipes prove indispensable in various processes such as water preparation, storage, transportation, purification, regeneration, and desalination. With a remarkable annual demand of approximately 25,000 tons, they are the material of choice for ensuring seamless operations in water management.
Equipment Manufacturing and Maintenance
In the realm of equipment manufacturing, over 20,000 tons of stainless steel pipes are utilized each year, especially in sanitary or antibacterial specifications. Crafted typically from SUS304 and 316L, these pipes fulfill the rigorous standards required by media in the food and biopharmaceutical sectors. Valued for their robustness and antimicrobial attributes, antibacterial stainless steel is increasingly sought after for kitchen equipment, food industry work surfaces, medical tools, and household applications such as towel racks and refrigerators.

Our Advantages

Qualitative Materials:

Our commitment to excellence begins with sourcing only the finest raw materials, ensuring our products excel in strength, durability, and longevity.

Advanced Technology:

Leveraging cutting-edge manufacturing techniques, our processes incorporate advanced smelting, continuous casting, and rolling to deliver products of unparalleled quality.

Customized Service:

We offer bespoke design and manufacturing services, meticulously crafted to meet the specific needs and preferences of each customer.

FAQ

Q1: Why choose your company?

A: With over 16 years of rich industry expertise and our very own cutting-edge factory, Shanghai Bolaisheng Metal Group Co., Ltd. offers unmatched service excellence. Our professional and devoted sales team is committed to providing a seamless customer experience, establishing us as your reliable partner in the stainless steel tubing market.

Q2: What are your terms of payment?

A: We operate on a secure payment structure, requiring a 30% T/T deposit initially, with the balance of 70% due before delivery. This arrangement fosters a trustworthy transaction for both parties.

Q3: What are your delivery terms?

A: Our delivery terms are comprehensive, including FOB, CFR, CIF, and EXW, offering the flexibility to cater to your diverse shipping requirements.

Q4: What is your delivery time?

A: Our standard lead time spans from 7 to 15 days post deposit receipt, ensuring prompt and efficient delivery of your order.

Q5: Can you provide samples?

A: Absolutely, we provide free samples when available from our stock. However, the transportation costs are the responsibility of the buyer. This enables you to evaluate our product quality before making a more significant purchase commitment.

Certification