Diameter 300mm to 3500mm En31/SAE52100 Seamless Alloy Hollow Section Spiral Seamless Steel Pipe Hrss Pipe

• Customization: Available
• After-sales Service: Hot Rolled Seamless Steel Pipe Endless Service
• Warranty: 5
• Model NO.: ZD-HRSSP
• Type: Seamless
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Custom Made: Yes
• Custom Cycle: 7-15 Days
• Production Standards: ASTM/JIS/AISI/DIN/BS/En/GB
• Payment Term: 30%T/T Advance + 70% Balance
• Alloy or Not: Low Alloy
• MOQ: 3tons
• Lengh: Customized
• Advantage: Wear Resistance, Machinability, Easy Welding
• Specification2: Zd-Hrssp20e10/20/30/40/50/60/70
• Specification3: Zd-Hrssp20e80/90/102/118/120
• Standard1: ASTM a 6/a 6m-07 BS 4-1:1993 En 10024 JIS G 3192
• Transport Package: Export Standard Package/as Request
• Specification: According to customer requirements
• Trademark: ZHENGDE
• Origin: China
• HS Code: 7304192000
• Production Capacity: 65000 Tons/Month

Product Description

Product Description

Alloy 52100 bearing quality / aircraft quality dual certified steel is a moderately deep hardening alloy having high resistance to wear, medium toughness, and low resistance to softening at high temperatures. It is an oil hardening high Carbon - Chromium alloy that develops high surface hardening.
52100 Premium Quality VAR is 52100 melted twice (vacuum arc remelted) and is used in various bearing applications for aircraft or other critical parts. It has excellent wear and abrasion resistant qualities and can also be used in place of tool steels. It has the same basic properties as 52100 but the VAR melting provides extreme cleanliness.

EN31 is a very high strength steel alloy which is hardened and tempered before supplying and has nickel, chromium, molybdenum making it high tensile steel strength, with good ductility and wear resistance. With relatively good impact properties at low temperatures, EN31 is also suitable for a variety of elevated temperature applications. EN31 round bars have good internal strength and high external strength, which makes it highly wear resistant. EN31 steel round bars offer good combination of ductility, strength and wear resistance. EN31 is a very high strength alloy engineering steel.

thick  Φ	3	3.5	4	4.5	5	5.5	6	6.5	7	8	8.5	9	10	12
32	2.146	2.46	2.762	3.052	3.329	3.594	3.847	4.088
38	2.589	2.978	3.354	3.718	4.069	4.408	4.735	5.049
42	2.885	3.323	3.749	4.162	4.562	4.951	5.327	5.691
45	3.107	3.582	4.044	4.495	4.932	5.358	5.771	6.172
50	3.477	4.014	4.538	5.049	5.549	6.036	6.511	6.973	7.423	8.286	8.699
54	3.773	4.359	4.932	5.493	6.042	6.578	7.103	7.614	8.114	9.075	9.538
57	3.995	4.618	5.228	5.826	6.412	6.985	7.546	8.095	8.632	9.667	10.167
60	4.217	4.877	5.524	6.159	6.782	7.392	7.99	8.576	9.149	10.259	10.796
63.5	4.476	5.179	5.869	6.548	7.214	7.867	8.508	9.137	9.754	10.95	11.529
68	4.809	5.567	6.313	7.047	7.768	8.477	9.174	9.858	10.53	11.838	12.473
70	4.957	5.74	6.511	7.269	8.015	8.749	9.47	10.179	10.876	12.232	12.892	13.539	14.797	17.164
73	5.179	5.999	6.807	7.602	8.385	9.156	9.914	10.66	11.394	12.824	13.521	14.205	15.537	18.052
76	5.401	6.258	7.103	7.935	8.755	9.563	10.358	11.141	11.912	13.416	14.15	14.871	16.277	18.94
89	6.363	7.38	8.385	9.378	10.358	11.326	12.281	13.225	14.156	15.981	16.875	17.756	19.483	22.787
108	7.768	9.02	10.259	11.486	12.701	13.903	15.093	16.27	17.436	19.729	20.858	21.973	24.168	28.41
133		11.178	12.725	14.261	15.783	17.294	18.792	20.278	21.751	24.662	26.098	27.522	30.334	35.809
159		13.422	15.29	17.146	18.989	20.821	22.639	24.446	26.24	29.791	31.548	33.293	36.746	43.503
219		18.601	21.209	23.805	26.388	28.959	31.517	34.064	36.598	41.629	44.126	46.61	51.543	61.259
273		23.262	26.536	29.797	33.046	36.283	39.508	42.72	45.92	52.283	55.445	58.596	64.86	77.24
325		27.75	31.665	35.568	39.458	43.337	47.202	51.056	54.897	62.542	66.346	70.137	77.684	92.629
355				38.897	43.158	47.406	51.641	55.865	60.076	68.46	72.634	76.796	85.082	101.507
377				41.339	45.871	50.39	54.897	59.391	63.873	72.801	77.246	81.679	90.508	108.018
426				46.777	51.913	57.036	62.147	67.246	72.332	82.468	87.518	92.555	102.592	122.519
450								71.093	76.475	87.203	92.549	97.882	108.511	129.621
480								75.902	81.654	93.122	98.837	104.54	115.909	138.499
530								83.917	90.286	102.987	109.319	115.638	128.24	153.296
630								99.947	107.549	122.716	130.281	137.833	152.902	182.89

Our Advantages

Three-roll pipe mill
The seamless steel pipe produced by the three-roll mill for hot-rolling seamless steel pipe has high precision. Because of the cross-rolling with the mandrel, the rolling action is repeated many times in one pass, which greatly improves the accuracy of the wall thickness and is not easy to produce. Defects such as scratches, ears, and green lines; the flexibility in production is large, and the pass size can be changed with the help of the clutch of the roll.

Adequate inventory
Standing inventory of carbon seamless tubes, seamless special-shaped tubes, alloy seamless tubes, precision tubes. Various types of seamless steel pipes with a specification of 5-426*0.5-60mm and a length of 2-16m. The cold-rolled precision bright tubes produced by our factory have smooth appearance, uniform wall thickness, no oxide layer, and high precision. The inner hole of the steel pipe can be divided into round type, spline type, plum blossom type, etc. It is widely used in automobiles, motorcycles, electric power, petrochemicals, ships, aerospace, bearings, pneumatic components, oil cylinders, boiler equipment, medical equipment, fitness equipment and other industries.

Attention to detail
No matter how to choose the hot-rolled seamless steel pipe, its quality cannot be ignored. It must be noted that there should be no defects on the surface, such as small cracks or scars, etc., and that the thickness of the pipe wall is the same to ensure uniformity. The physical comparison is still very important. Only after the basic comparison of the physical objects is done, can the steel pipes that meet the needs be selected. The processing technology of each seamless steel pipe is different, which will also affect its application field. Now it is generally processed by cold drawing and hot rolling, and the processing effect of the two and the application of steel pipes will also have certain differences.

Applicable scene
Hot-rolled seamless pipes specifically include low and medium pressure boiler steel pipes, high-pressure boiler steel pipes, seamless steel pipes for ships, petroleum cracking steel pipes, seamless steel pipes for high-pressure fertilizer equipment, oil jacket steel pipes, pipeline steel pipes, hollow sucker rods, and ordinary fluid steel pipes. , structural seamless steel pipes and imported alloy steel pipes, etc., with rich varieties and complete specifications, widely used in petroleum, chemical, electric power, boilers, ships, machinery and other industries, and have been sold all over the world.

Quality first: production and inspection in strict accordance with production standards;
Price advantage: discounts based on real market prices;
Transaction security: There will be no loss of customer funds;
After-sales guarantee: the customer's problem is our problem;
Long-term cooperation: quality assurance, price advantage, sincere service can last for a long time.

Detailed Photos

Packaging & Shipping

Company Profile

Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper and other metal products integrated large enterprises. Five production and sales bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan and Tai'an, with more than 100 production lines, 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries and regions such as North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.

Certifications