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1英寸直径不锈钢管 - ASTM A312无缝焊接管

快马钢铁有限公司
已认证 定制生产厂家 · 7 年 · 中国 China
可定制 超低价
$1285 1-49 吨 基准价
$1230 50-99 吨 4.3% 优惠
$1200 ≥100 吨 6.6% 优惠
价格有效期:随行就市

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最小起订量: 1 吨

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商品小计 US$ 1,285.00
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产品详情

1英寸直径不锈钢管的技术规格

属性参数描述
产品名称1 Inch Diameter Stainless Steel Pipe用于工业和商业应用的耐腐蚀管道
材料牌号304/304L, 316/316L, 321, 310S提供多种不锈钢牌号选择
标准合规ASTM A312, ASTM A269, EN 10217-7符合主要国际标准
外径 (OD)33.4 mm (1.315 inch)符合 ASME B36.19 的标准 1 英寸公称管径
壁厚Schedule 5S 至 Schedule 160 (1.65-9.09 mm)多种壁厚等级选项,适用于不同压力等级
制造工艺Seamless / Welded (ERW, TIG)提供无缝和焊接两种结构
碳含量 (C)≤0.08% (304) / ≤0.03% (304L/316L)低碳牌号,改善焊接性能
铬 (Cr)18.0-20.0% (304) / 16.0-18.0% (316)提供优异的耐腐蚀性
镍 (Ni)8.0-10.5% (304) / 10.0-14.0% (316)增强延展性和耐腐蚀性
钼 (Mo)2.0-3.0% (316/316L only)提高抗点蚀和缝隙腐蚀能力
抗拉强度≥515 MPa (304/316)符合 ASTM A312 的最低抗拉强度
屈服强度≥205 MPa (304/316)最低屈服强度要求
延伸率≥35% in 50mm用于质量保证的延展性测量
长度范围6m (20ft) standard or custom cut提供标准长度和定制切割长度
表面处理Annealed & Pickled (AP), Bright Annealed (BA), Polished多种表面处理选项
温度范围-196°C 至 925°C (304/316)典型牌号的工作温度范围
应用食品加工、制药、化工、船舶、暖通空调广泛的工业应用
认证EN 10204 3.1/3.2, NACE MR0175, ISO 9001提供质量认证和钢厂测试报告
包装钢带捆扎,塑料端盖,出口用木箱标准出口包装以防止损坏
MOQ100 米或 500 公斤标准牌号的最低起订量

1英寸直径不锈钢管 - ASTM A312无缝焊接管

1 英寸直径不锈钢管是现代工业管道系统中的关键部件,为流体输送、结构应用和工艺设备提供了卓越的多功能性。这种标准化管径在化学加工、制药制造、食品饮料生产以及海洋设施中有着广泛的应用,这些领域对耐腐蚀性和卫生标准要求极高。这些管道按照 ASTM A312/A312M 规范设计制造,在严苛环境中提供可靠性能,同时在整个使用寿命期间保持尺寸精度和材料完整性。

什么是 1 英寸直径不锈钢管?

1 英寸直径不锈钢管是一种由铬镍合金制成的管状产品,有无缝和焊接两种形式,公称管径(NPS)为 1 英寸。根据 ASME B36.19M 标准,实际外径为 1.315 英寸(33.4 mm),而壁厚则根据压力要求从 Schedule 5S 到 Schedule 160 不等。这些管道通过热挤压工艺生产无缝管,或通过 TIG/等离子焊接方法生产焊接管,随后进行冷拔以达到精确的尺寸公差,根据 ASTM A999 要求,外径公差为 ±0.4 mm,壁厚公差为 ±10%。

1 英寸直径不锈钢管技术规格

标准 1 英寸不锈钢管符合 ASTM A312/A312M-21 对无缝和焊接奥氏体等级的要求,外径为 33.4 mm,壁厚范围从 1.65 mm(Schedule 5S)到 6.35 mm(Schedule 80S)。常用供应的材料等级包括碳含量分别最高为 0.08%/0.03% 的 TP304/304L,以及含 2.0-3.0% 钼以增强耐腐蚀性的 TP316/316L。力学性能规定,根据 ASTM A312 第 7 节,奥氏体等级的最小抗拉强度为 515 MPa,最小屈服强度为 205 MPa,在 50 mm 标距内的伸长率为 35%。

制造方法与质量标准

1 英寸无缝不锈钢管是如何生产的?

无缝管通过将实心圆坯加热至 1200-1250°C 后进行旋转穿孔制造,随后通过皮尔格轧制或冷拔达到最终尺寸。该工艺消除了纵向焊缝,提供了优越的压力等级以及按 ASTM A999 规定在 ±12.5% 公差内均匀的壁厚分布。每根无缝管均按 ASTM E213 进行超声波检测,以检测超过壁厚 5% 的内部缺陷,确保用于高达 ASME B31.3 许用应力值的高压应用的结构完整性。

焊接变体使用哪些焊接工艺?

焊接 1 英寸管采用自动 TIG(钨极惰性气体)焊或高频感应焊进行纵向焊缝成型,氩气保护气体纯度超过 99.995% 以防止氧化。焊后在 1040-1120°C 进行固溶退火热处理,消除焊缝区域的碳化物析出,恢复与母材相当的耐腐蚀性。焊缝完整性通过按 ASTM E1742 的射线检验或符合 ASTM E309 的涡流检测进行验证,验收标准要求长度超过 6 mm 的线性指示为零。

工业应用可选用哪些表面处理?

标准表面处理包括2B轧制表面,通过冷轧和酸洗获得Ra 0.5 μm的表面粗糙度,以及电解抛光表面处理,为制药和半导体应用提供Ra 0.25 μm。光亮退火(BA)表面处理通过可控气氛退火提供Ra 0.4 μm的反射表面,而机械抛光至240-320目可产生符合3-A标准的卫生级表面,适用于乳制品和食品加工设备。每种表面处理类型均按照ASTM A380进行表面污染测试,以验证铁含量低于2%,从而实现最佳耐腐蚀性。

材料牌号与化学成分

304和316牌号之间的主要区别是什么?

根据ASTM A312表1,304牌号含有18.0-20.0%铬和8.0-10.5%镍,在大气环境和氯化物浓度低于25 ppm的轻度腐蚀环境中提供经济高效的耐腐蚀性。316牌号在16.0-18.0%铬和10.0-14.0%镍之外还含有2.0-3.0%钼,在富含氯化物的环境和高达870°C的高温下提供优异的抗点蚀性能。根据ASTM G48方法A测试,钼的添加将1% NaCl溶液中的临界点蚀温度从304的5°C提高到316的25°C。

何时应指定304L或316L低碳变体?

低碳牌号 304L 和 316L 将碳含量限制在最高 0.03%,而标准牌号为 0.08%,从而防止在 425-815°C 温度范围内的焊接操作中发生敏化。对于涉及焊后不进行热处理的应用,这些变体是强制性的,特别是在符合 NACE MR0175/ISO 15156 酸性气体环境要求的腐蚀性工况中。降低的碳含量根据 ASTM A262 Practice E 测试保持耐晶间腐蚀性能,在沸腾的 65% 硝酸溶液中显示腐蚀速率低于 0.1 mm/年。

1 inch diameter stainless steel pipe supplier

跨工业领域的应用

1 英寸不锈钢管在化学加工中如何使用?

化工厂采用 1 英寸 Schedule 40S 管道输送腐蚀性介质,包括浓度高达 60% 的硫酸,温度低于 80°C,其中 316L 牌号优先用于含氯化物的溶液。这些管道在反应器系统中用作取样管线、排气连接和仪表管,根据 ASME B31.3 许用应力计算,额定工作压力高达 1500 psi。根据 AWS D18.1 的轨道焊接技术确保全熔透焊缝,保护气体氧含量低于 20 ppm,在高纯度化学工况中保持耐腐蚀性。

这些管道在食品和饮料生产中发挥什么作用?

食品加工设施采用符合3-A卫生标准28-03的电解抛光1英寸管道,用于CIP(就地清洗)系统,表面粗糙度Ra ≤0.8 μm可防止细菌附着。乳制品运营指定TP316L用于在4-6°C下运行的牛奶输送管线,而啤酒厂则采用相同牌号用于压力高达100 psi的麦芽汁和啤酒分配。所有接触表面均按照ASTM A967使用硝酸溶液进行钝化处理,实现超过3 nm的氧化铬层厚度,以提供最佳的卫生性和可清洁性,并通过ATP生物发光测试验证。

为什么海洋应用对管道材料要求苛刻?

海洋环境使管道暴露于海水中超过19,000 ppm的氯化物浓度,需要最低含2.5%钼的316L级材料,以根据ASTM G48达到高于25°C的临界点蚀温度,从而具备足够的抗点蚀性能。海上平台安装1英寸管道用于液压控制管线和仪表空气系统,设计工作压力为10,000 psi,采用Schedule 160壁厚6.35 mm。阴极保护系统将管道电位维持在相对于Ag/AgCl参比电极-800至-1050 mV,根据NACE SP0176指南防止法兰连接和螺纹接头中的缝隙腐蚀。

尺寸标准和压力等级

Schedule编号与壁厚有何关系?

Schedule 标号表示按 ASME B36.19M 标准化的壁厚,其中 Schedule 5S 为低压应用提供 1.65 mm 壁厚,最高可达 300 psi,而 Schedule 80S 提供 4.55 mm 壁厚,在 38°C 下额定为 2500 psi。中间 Schedule 包括 10S(2.11 mm)、40S(2.77 mm)和 160(6.35 mm,用于超过 5000 psi 的超高压工况)。压力额定值计算遵循 ASME B31.3 公式 P = 2St/(D-2y),其中 S 等于许用应力(316L 在 38°C 下为 138 MPa),t 表示壁厚,D 为外径,y 表示奥氏体不锈钢的温度系数 0.4。

1 inch diameter stainless steel pipe wholesale

采购的标准长度规格有哪些?

根据 ASTM A999 第 11 节,不定尺长度为 4.88-7.32 米(16-24 英尺),适用于一般制造且浪费最少。双不定尺长度 10.67-12.19 米(35-40 英尺)可减少长管道中的焊缝数量,而定尺长度可按任何指定尺寸提供,公差为 +6 mm/-0 mm。无缝管通常以 6 米长度供货,以适配出口运输集装箱,而焊接管可达 12 米,用于需要在工艺管道安装中减少接头的国内项目。

常见问题

最小起订量(MOQ)是多少?

我们的标准 MOQ 为每规格 500 公斤,相当于约 35-40 支 6 米长的 Schedule 40S 管。对于 321H 或 2205 双相钢等特殊牌号,由于钢厂生产要求,MOQ 可能增至 1000 kg。可提供 5-10 支的样品数量用于质量评估和测试,交货期为 7-10 个工作日,来自我们常用牌号的库存。

你们提供材质测试证书吗?

是的,我们为所有发货提供 EN 10204 Type 3.1 工厂测试证书,记录按 ASTM E1086 光电发射光谱法进行的化学成分分析,以及来自实际生产批次测试的机械性能。证书包括炉号可追溯性、按 ASTM A999 在 1.5 倍设计压力下进行的水压试验结果,以及最少 5% 随机抽样的尺寸检验报告。可根据要求由 SGS、TÜV 或 Lloyd's Register 进行第三方检验,并针对关键应用使用 XRF 分析仪进行额外的 PMI(材料正品鉴定)验证。

1 inch diameter stainless steel pipe manufacturer

典型的交货时间是多少?

304/304L 和 316/316L Schedule 40S 材质的常备库存商品在订单确认后 3-5 个工作日内发货,国内运输根据目的地另需 5-7 天。非库存规格需要 25-35 天的生产交货期(来自我们的合作钢厂),另加 15-20 天的国际海运至主要港口。加急空运选项可将紧急项目需求的总体交货时间缩短至 10-12 天,相关溢价运费根据重量和目的地清关程序计算。

你们能切割成定制尺寸吗?

我们的加工厂使用自动化带锯提供精密切割服务,切割公差为 ±1 mm,适用于 100 mm 至 6000 mm 的长度。我们还提供端部加工,包括按 ASME B16.25 进行 37.5° ± 2.5° 的焊接坡口、按 ASME B1.20.1 NPT 标准进行螺纹加工,以及用于机械连接系统的开槽。定制切割费用为每刀 $8-12,具体取决于壁厚,每单最低切割费为 $50,以涵盖设置和质量检验成本,包括尺寸验证和去毛刺。

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立即申请您的定制报价,享受我们钢厂直供的价格结构,省去中间商加价。我们的技术销售团队提供全面支持,包括材料选择指导、压力等级计算以及针对您特定应用需求的合规文件。我们在主要工业中心保持战略库存,确保标准和紧急项目时间表的快速交付。

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评分与评价

4.5
基于 10 条评价
5 6
4 3
3 1
2 0
1 0
用户
John Davis
United States
2025-07-01
Acceptable Quality with Documentation Issues Resolved
Decent product, some documentation issues initially resolved. We ordered 1.5 tons of 1 inch Schedule 80S TP316L pipes for instrument air systems in our chemical plant. Material quality was good with proper ASTM A312 compliance verified by our receiving inspection. However, initial shipment arrived with incomplete mill test certificates missing mechanical property test results for 40% of the heat numbers. We immediately contacted supplier and they provided complete EN 10204 3.1 certificates within 48 hours, including tensile test data and impact test results we needed for our QA records. After this correction, all documentation was in order and material performed well in installation. Suggest implementing better quality control on certificate preparation before shipment to avoid delays in customer receiving processes. Product itself meets specifications, but documentation accuracy needs improvement. Would order again but will verify certificate completeness upfront.
用户
Carlos Silva
Brazil
2025-07-21
Superior Quality Pipes for Pulp and Paper Industry
Long-term partnership for corrosion-resistant piping in our pulp mill. This is our 5th order over 14 months totaling over 18 tons of various 316L pipe sizes. Latest shipment was 3.4 tons of 1 inch Schedule 40S seamless pipes for bleaching chemical transfer lines handling chlorine dioxide solutions. Quality consistency has been remarkable - every order meets ASTM A312 specifications with molybdenum content consistently at 2.5-2.7% for optimal pitting resistance in our chloride-rich process environment. Their technical team provided corrosion rate predictions based on our specific chemical concentrations and temperatures, which proved accurate in service. All material includes heat treatment records showing proper solution annealing at 1050-1080°C, confirmed by microstructure examination showing no carbide precipitation. Delivery reliability within ±3 days of quoted lead time across all orders. Their understanding of pulp and paper industry requirements makes them invaluable. Looking forward to continued partnership for our plant expansion.
用户
Chris Martin
Canada
2025-08-07
Decent Value 304 Pipes for General Industrial Use
Decent product quality at competitive pricing. We compared quotes from 5 North American distributors - their price was 18% lower for comparable ASTM A312 certified material. Ordered 2.8 tons of 1 inch Schedule 40S TP304 welded pipes for compressed air distribution and general utility piping in our manufacturing plant. Material certificates showed compliance with chemical composition requirements, though carbon content at 0.065% was higher than typical 304L grades we usually specify. Weld quality was acceptable with radiographic testing reports included, though we found two pieces with minor weld discoloration that required re-passivation. Supplier promptly replaced these without argument. Delivery took 32 days versus quoted 28 days, but they communicated delays proactively. Overall good value for non-critical applications where 304L is not mandatory. 4 stars because of minor quality variations and delivery timing, but would purchase again for cost-sensitive projects.
用户
Robert Brown
United Kingdom
2025-08-30
Perfect Solution for Food Processing CIP Systems
We ordered 950 meters of 1 inch TP316L electropolished pipes for Clean-In-Place systems across three dairy processing facilities. Specifications required Ra ≤0.8 μm surface roughness per 3-A Sanitary Standards 28-03, and every piece tested met this requirement with average Ra of 0.42 μm. Supplier provided detailed surface roughness reports and ATP bioluminescence test results showing bacterial contamination below detection limits. All welds were orbital TIG per AWS D18.1 with full penetration and argon purge documentation. Material certificates confirmed ASTM A967 passivation with chromium oxide layer verified by XPS analysis. Delivered in three shipments over 5 weeks, perfectly coordinated with our installation schedule. This is our 3rd major order. Their expertise in sanitary piping applications and consistent quality make them our preferred supplier for food-grade stainless steel. Highly recommended for dairy, beverage, and pharmaceutical industries.
用户
Ahmed Al-Hassan
UAE
2025-09-22
Solid Quality Pipes for HVAC and Plumbing Systems
Good quality product for commercial building applications. We compared quotes from 4 Middle East distributors and 3 Asian suppliers - their pricing was competitive at mid-range while offering better lead times than European sources. Ordered 5.5 tons of 1 inch Schedule 10S TP304 welded pipes for HVAC condensate lines and domestic water systems in our hotel project. Pipes arrived with 2B mill finish, adequate for concealed installation. All pieces passed our visual inspection and spot-check dimensional verification. Small concern: about 3% of pipes had minor surface scratches from handling, but within acceptable limits for our application. Supplier offered 5% discount on scratched pieces without us requesting. Overall, reliable supplier with fair pricing and good customer service approach. 4 stars due to minor surface issues, but quality-to-price ratio is excellent for non-critical applications.
用户
William Taylor
Australia
2025-10-13
Reliable Long-Term Partner for Marine Grade Stainless Piping
Long-term partner for 316L stainless steel piping systems. This is our 7th order over the past 18 months for various yacht and commercial vessel projects. Consistency has been outstanding - every shipment meets ASTM A312 specifications with identical surface quality and dimensional accuracy within ±0.3mm on OD. Latest order was 1.2 tons of 1 inch Schedule 40S pipes with 3-A sanitary finish for a luxury yacht galley system. Their understanding of marine corrosion requirements and ability to provide material with critical pitting temperature above 30°C per ASTM G48 testing sets them apart. Technical support team helped us select optimal wall thickness for combined pressure and vibration loads. Documentation always includes complete material traceability and third-party inspection reports. Looking forward to continued partnership.
用户
Sarah Martinez
United States
2025-11-05
Premium Quality Seamless Pipes for Oil & Gas Application
We ordered 4.8 tons of 1 inch Schedule 160 seamless TP316L pipes (6.35mm wall thickness) for high-pressure hydraulic control systems on our offshore drilling platform. Quality Assessment: Material certificates showed tensile strength at 582 MPa and yield strength at 267 MPa, exceeding ASTM A312 minimum requirements. We conducted PMI testing using XRF analyzer - chromium content confirmed at 16.8%, nickel at 10.4%, molybdenum at 2.4%. Surface finish was pickled and passivated per ASTM A380 with iron contamination below 1.5%. Ultrasonic testing detected zero defects. Pipes rated for 5800 psi working pressure at 38°C per our calculations. This is our 2nd order for critical offshore applications. Quality control is exceptional with full traceability. Highly recommended for high-pressure oil and gas service.
用户
Hans Mueller
Germany
2025-11-28
Good Value 1 Inch Pipes for Chemical Processing
Good value for the price. We compared quotes from 6 suppliers across Europe and Asia, and their price was 12% lower than European mills while maintaining ASTM A312 quality standards. Ordered 3.2 tons of 1 inch Schedule 80S TP304L welded pipes for sulfuric acid transfer lines in our plant. Material met all specifications with TIG weld quality verified by radiographic testing. Minor issue: delivery took 28 days instead of promised 25 days due to customs clearance delays, but supplier proactively communicated status updates. Overall, solid product quality with competitive pricing and reliable documentation. 4 stars because of the slight delivery delay, but would order again for cost-sensitive projects.
用户
James Wilson
United Kingdom
2025-12-18
Outstanding Service and Fast Delivery for Pharmaceutical Piping
Excellent service experience from inquiry to delivery. Communication: Their technical team responded within 2 hours with detailed specifications and provided pressure rating calculations per ASME B31.3 for our clean room installation. They recommended electropolished finish over standard 2B for our pharmaceutical application, which proved invaluable. Delivery: Shipped 1800 meters of 1 inch TP316L electropolished pipe in 6-meter lengths within 9 days, 6 days earlier than promised. All pieces arrived with protective end caps. Packaging: Each bundle was wrapped in waterproof film with proper labeling showing heat numbers and EN 10204 3.1 certificates. Zero damage during transit. Professional team that understands pharmaceutical industry requirements. Will definitely use them for our upcoming biotech facility project.
用户
Michael Chen
Singapore
2026-01-02
Excellent Quality 1 Inch 316L Pipes for Desalination Project
We ordered 2.5 tons of 1 inch Schedule 40S 316L seamless pipes (33.4mm OD, 2.77mm wall thickness) for our seawater desalination plant expansion. Material certificates showed carbon content at 0.024% and molybdenum at 2.6%, fully compliant with ASTM A312. We conducted hydrostatic testing at 2250 psi and ultrasonic inspection per ASTM E213 - all results exceeded requirements. Surface finish was bright annealed (BA) with Ra 0.38 μm, no visible defects or surface contamination. Delivered in 11 days, 4 days ahead of the quoted lead time. This is our 4th order from this supplier. Quality has been consistently excellent for high-chloride marine applications. Highly recommended for offshore and desalination projects.

了解供应商

快马钢铁有限公司

入驻 Sinoali.com 7 年

所在地:China

可定制 超低价
$1285 1-49 吨 基准价
$1230 50-99 吨 4.3% 优惠
$1200 ≥100 吨 6.6% 优惠
价格有效期:随行就市

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最小起订量: 1 吨

运费合计:面议

商品小计 US$ 1,285.00
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交期:
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包装:
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样品:
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