ASTM A312 TP304L Stainless Steel Welded Pipe

Name: China ASTM A312 TP304L Stainless Steel Welded Pipe Manufacturers Factory - Good Price - GNEE
Brand: GNEE
SKU: 254958246

Technique: Cold-Drawn
Material: Stainless Steel
Section Shape: Round
Transport Package: As Required
Outer Diameter (OD) Tolerance: Typically ±0.79mm
Wall Thickness (WT) Tolerance: ±10%
Length: Custom extra-long lengths available upon request for specific projects
Online Inspection: All welded tubes undergo 100% automated Eddy
Current Testing (ECT) and Hydrostatic Testing
Weld Seam Treatment: Bead removal service available
Transport Package: As Required

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Description

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of astm a312 tp304l stainless steel welded pipe in China. With abundant experience, we warmly welcome you to wholesale customized astm a312 tp304l stainless steel welded pipe from our factory. For price consultation, contact us.

As a trusted global supplier, GNEE has exported ASTM A312 TP304L stainless steel welded pipes to over 80 countries worldwide, with an annual shipment volume exceeding 20,000 tons. Supported by numerous international certifications-including ISO and PED-and a commitment to fully cooperating with third-party inspections, we have accumulated extensive experience in serving global projects across the oil and gas, chemical processing, and industrial piping sectors.

The ASTM A312 TP304L pipes we supply are manufactured using advanced automated welding processes. Subsequently, they undergo 100% online eddy current and ultrasonic testing to ensure weld integrity and eliminate defects such as lack of fusion, porosity, or cracks. The weld coefficient (joint efficiency) of these pipes reaches ≥95%–100%; for critical applications, we also offer additional radiographic testing (RT) services to verify the structural soundness of the pipe's interior.

Regarding corrosion resistance, all ASTM A312 TP304L welded pipes undergo solution annealing treatment (at ≥1040°C followed by rapid cooling). This process is designed to restore the microstructure and relieve residual stress, thereby significantly enhancing the material's resistance to intergranular corrosion. In terms of dimensional precision, we strictly control roundness (within 80% of the OD tolerance) and maintain exceptional straightness (within 1/1000 of the pipe length), ensuring smooth installation processes and minimizing the need for on-site adjustments.

ASTM A312 TP304L Stainless Steel Welded Pipe

ASTM A312 TP304L Stainless Steel ERW Pipe

Every pipe leaves our facility accompanied by a comprehensive Mill Test Certificate (MTC EN 10204 3.1); furthermore, dual certification (ASTM/ASME) is available upon request to meet the specific requirements of various international projects.

ASME SA312 Tp304L Welded Pipe Mill Test Certificate

Specification of Stainless Steel 304L Pipe

Specifications	ASTM A312 / ASME SA312
Grade	304L
End	Screwed, Beveled, Threaded, Plain
Type	Welded \| CDW \| ERW \| DOM \| Seamless \| Fabricated \| CEW
Sizes	5.0 milimeter - 1219.2 milimeter
O.D.	Sizes up to 12 inch NB, 6.00 mm Other Dia. upto 250 mm Other Dia.
Schedule Thickness Ranges	SCH XS, SCH 40, SCH 80S, SCH 5, SCH 80, SCH XXS, SCH 160, SCH10, All Schedules
Delivery Condition	Annealed & Pickled, Polished, Bright & Annealed, etc

Composition Chart of 304L SS Hexagonal Pipe

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
304L	min.	–	–	–	–	–	18.0	–	8.0	–
304L	max.	0.03	2.0	1.00	0.045	0.03	20.0	–	12.0	–

SS UNS S30403 Pipes Mechanical Properties Chart

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
304L	485	170	40	92	201

Pressure Rating of SS UNS S30403 304L Welded Pipe

Pipe Size	Pipe Schedule	Temperature (oF)
(inches)	Pipe Schedule	100	200	300	400	500	600	650	700	750
1″	40	3048	2629	2362	2171	2019	1924	1867	1824	1810
	80	4213	3634	3265	3002	2791	2659	2580	2528	2501
	160	6140	5296	4759	4375	4068	3876	3761	3684	3646
1 1/2″	40	2257	1947	1750	1608	1496	1425	1383	1354	1340
	80	3182	2744	2466	2267	2108	2009	1949	1909	1889
	160	4619	3984	3580	3291	3060	2916	2829	2772	2743
2″	40	1902	1640	1474	1355	1260	1201	1165	1141	1129
	80	2747	2369	2129	1957	1820	1734	1682	1648	1631
	160	4499	3880	3486	3205	2980	2840	2755	2699	2671
3″	40	1806	1558	1400	1287	1196	1140	1106	1084	1072
	80	2553	2202	1979	1819	1691	1612	1564	1532	1516
	160	3840	3312	2976	2736	2544	2424	2352	2304	2280

304L Stainless Steel Pipe Price List

Product	Price
TP304L Bright Annealed Tube	$3.90/ Kilogram
304L Corrosion Resistant Round Polished Welded Stainless Steel Pipe	$1,280.00 - $1,340.00/ Ton
AISI 304L diameter 25mm 32mm polish pipe	$1,470.00 - $1,750.00/ Ton
12X18H10T 304L Seamless Stainless Steel Pipe	$3.85 - $4.38/ Kilogram

Numerous suppliers, exporters, stockists, retailers, dealers, distributors, warehouse keepers, importers, and wholesalers of 304L stainless steel pipes choose us as their preferred partner, thanks to the highly competitive pricing we offer in India. Contact us today to receive a quick quote!

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We fully understand your concerns regarding welded piping. For this very reason, all our ASTM A312 TP304L welded pipes undergo 100% eddy current testing and solution annealing to ensure that their weld zones possess corrosion resistance and strength equivalent to those of seamless pipes.
Furthermore, upon request, we can provide RT (X-ray) inspection reports to offer 100% safety assurance for your pressure systems. Would you be interested in reviewing samples of our internal weld bead treatment, as well as our Material Test Reports (MTRs)?

Click to Get Material Test Reports

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TP304L welded tubing offers a 20–30% reduction in procurement costs compared to seamless pipe solutions, coupled with an expedited lead time of just 15–21 days. We provide large-diameter solutions up to 48 inches (1219 mm), as well as custom lengths reaching up to 18 meters per single piece-thereby reducing the circumferential welding workload required for your on-site installation by 50%.

Each steel pipe is fitted with impact-resistant PE end caps to safeguard the precision of the bevels, which conform to the ASME B16.25 standard; for surfaces requiring a polished finish, we also apply an 80μm-thick, scratch-resistant PE protective film. For orders involving large-diameter or thick-walled pipes, we utilize reinforced steel-framed wooden crates that comply with ISPM-15 standards.