China is a large agricultural country. The invention and use of pesticides have greatly increased the output of foodstuffs. Organophosphorus pesticides are the most used pesticides in China at the current stage and have promoted the development of agriculture. However, due to excessive and improper use, the agricultural environment and food safety problems caused by pesticide residues and their pollutants are getting more and more attention. Therefore, the detection of organophosphorus pesticide residues has become a very important task. One of the most effective ways to control the hazards of pesticide residues on humans is to strengthen the detection of pesticide residues in foods.

With the continuous improvement of people's quality of life, health has gradually become the focus of attention. However, during the growth process, fruits and vegetables do not know how many pesticides have been used to kill insects. As a result, pesticides and other harmful substances are increasingly left on fruits, vegetables and other foods, seriously threatening people's health. When we unknowingly eat foods that contain residual pesticides and harmful substances, they cannot be discharged from the human body and they are trapped in the human body, directly endangering human health, causing necrosis, hardening of the internal organs, weakening of immune function, and poor development. The Portable Pesticide Residue Tester can help you identify whether there are pesticide residues in fruits and vegetables in a few minutes so that you and your family and others can enjoy it with peace of mind.

However, the initial pesticide residue detection technology was limited to chemical, colorimetric and bioassay methods. The detection method lacks specificity and the sensitivity is not high. In the 1960s, gas chromatography was applied to the analysis of pesticides and drug residues, which greatly improved the detection level of pesticides and drug residues. Since the 1980s, high performance liquid chromatography has begun to be widely used for the analysis of heat-labile and ionic pesticides and their metabolites. Although the chromatographic method is accurate and highly sensitive, the equipment required is expensive, requires professional operation, and has a long analysis time, which is not conducive to on-site monitoring.

In recent years, the application of electrochemical biosensors to the monitoring of pesticide residues has attracted widespread attention. Compared with traditional HPLC, gas chromatography and other laboratory testing methods, electrochemical biosensors have the advantages of rapid detection and easy operation. , Low cost, high sensitivity, etc.; and after the miniaturization of the modified biosensor production of pesticide residue detector is easy to carry, convenient for field testing in the outdoors.

After the pesticide residue detector has been designed, it can detect that organic phosphorus and carbamate pesticides can inhibit the normal function of cholinesterase under certain conditions, and the inhibition rate is in a positive relationship with the concentration of pesticides. Under normal conditions, the enzyme catalyzes the hydrolysis of the metabolite (acetylcholine), a neurotransmitter, and the hydrolysate reacts with the chromogenic reagent to produce a yellow substance. The pesticide absorbance tester measures the change in absorbance over time and calculates the inhibition rate. The inhibition rate can be judged. Whether the sample contains organic phosphorus or carbamate pesticides.

Seamless Pipe


: Carbon steel seamless pipes for use in low and medium pressure boilers, petroleum casing tubes, ships, fluid conveyance, petroleum cracking, chemical fertilizer equipments, structures, and hollow pumping rods. We can produce seamless steel pipes from 12″ to D40″, thickness SCH30, SCH40, SCH80, SCH160 and so on, according to the standards such as \ASTM\API 5L\BS EN ISO,

(1)From 2″-4″, our pipes are cold drawning.

(2)From 4″-12″, our pipes are hot rolling.(stok available )

(3)Over 12″, our pipes are hot expending max 40'

A53 Chemical components and mechanical propert
Standard Trade mark Chemical components Mechanical property
C Si Mn P S Cu Ni Mo Cr V Tensile Strength(Mpa) Yield Strength (Mpa) Elongation(%)
ASTM A53 A ≤0.25 / ≤0.95 ≤0.05 ≤0.06 ≤0.40 ≤0.40 ≤0.15 ≤0.40 ≤0.08 ≥ 330 ≥ 205 ≥ 29.5
B ≤0.30 / ≤1.2 ≤0.05 ≤0.06 ≤0.40 ≤0.40 ≤0.15 ≤0.40 ≤0.08 ≥ 415 ≥ 240 ≥ 29.5

A106 Chemical components and mechanical property
Standard Trade mark Chemical components Mechanical property
C Si Mn P S Cu Ni Mo Cr V Tensile Strength
(Mpa) 		Yield Strength
(Mpa) 		Elongation
(%)
ASTMA106 B ≤0.30 ≥0.10 0.29~1.06 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.15 ≤0.40 ≤0.08 ≥415 ≥240 ≥30
C ≤0.35 ≥0.10 0.29~1.06 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.15 ≤0.40 ≤0.08 ≥ 485 ≥275 ≥ 30

API 5L Chemical components and mechanical property PSL1
Class and Sort Chemical components Mechanical property
C
(Max) 		Mn
(Max) 		P
(Max) 		S
(Max) 		Tensile Strength( Min) Yeild Strengh(Min)
psi Mpa psi Mpa
A25 CLI 0.21 0.6 0.03 0.03 45000 310 25000 172
CLII 0.21 0.6 0.03 0.03
A 0.22 0.9 0.03 0.03 48000 331 30000 207
B 0.28 1.2 0.03 0.03 60000 414 35000 214
X42 0.28 1.3 0.03 0.03 60000 414 42000 290
X46 0.28 1.4 0.03 0.03 63000 434 46000 317
X52 0.28 1.4 0.03 0.03 66000 455 52000 359
X56 0.28 1.4 0.03 0.03 71000 490 56000 386
X60 0.28 1.4 0.03 0.03 75000 517 60000 414
X65 0.28 1.4 0.03 0.03 77000 531 65000 448
X70 0.28 1.4 0.03 0.03 82000 565

A192 Chemical components and mechanical property
Chemical components Mechanical property
Standard Trademark C Si Mn P S Cu Ni Mo Tensile Strength(Mpa) Yield Strength
(Mpa) 		Elong
ation (%)
ASTM A192 A192 0.06-0.18 ≤0.25 0.27-0.63 0 0.04 / / / ≥325 ≥ 180


Chemical components:

Chemical components Mechanical property
Standard Trade mark C Si Mn P S Cr Ni Mo Tensile Strength(Mpa) Yield Strength(Mpa) Elongation(%)
EN102016-2 P235GH ≤0.16 ≤0.35 ≤1.20 ≤0.025 ≤0.020 0.30 / ≤0.08 360-500 ≥235 ≥23
P265GH ≤0.20 ≤0.40 ≤1.40 ≤0.025 ≤0.020 0.30 / ≤0.08 41


Usage Specification Steel Grade SZIE STOCK
High Temperature Seamless Carbon Steel Nominal Pipe ASME SA-106/ B.C SMLS 2"-40" T3.91-17.48mm Avilalbe
SA-106M
Seamless Carbon Steel Boil Pipe used for High Pressure ASME SA-192/ A192 SMLS 2"-40" T3.91-17.48mm None /Custom-make
SA-192M
Seamless Carbon Molybdenum Alloy Pipe used for Boiler and Superheater ASME SA-209/ T1.T1a.T1b SMLS 2"-40" T3.91-17.48mm None /Custom-make
SA-209M
Seamless Medium Carbon Steel Tube & Pipe used for Boiler and Superheater ASME SA-210/ A-1.C SMLS 2"-40" T3.91-17.48mm None /Custom-make
SA -210M
Seamless Ferrite and Austenite Alloy Steel Pipe used for Boiler, Superheater and Heat Exchanger ASME SA-213/ T2.T5.T11.T12.T22.T91 SMLS 2"-30" T3.91-17.48mm Avilalbe
SA-213M
Seamless Ferrite Alloy Nominal Steel Pipe applied for High Temperature ASME SA-335/ P2.P5.P11.P12.P22.P36.P9.P91.P92 SMLS 2"-30" T3.91-17.48mm Avilalbe
SA-335M
Seamless Low Temperture Stee Pipe ASME SA-333/ Gr3 Gr6 SMLS 2"-16" T3.91-14.27mm Avilalbe
SA-333M
Seamless Gas Line Stee Pipe API 5L PLS1 /PLS2 L245 ,L245N, L245Q ,L290,L290N, L290Q, L360, L360N, L360Q, L415 ,L415N ,L415Q SMLS 2"-16" T3.91-14.27mm General service avilable
(L485 ,L485N .L485Q Custom made )
Seamless Steel Pipe made by Heat-resistant Steel DIN 17175 St35.8.St45.8.15Mo3.13CrMo44.10CrMo910 SMLS 2"-16" T3.91-17.48mm None /Custom-make
Seamless Steel Pipe for EN 10216 P195GH.P235GH.P265GH.13CrMo4-5.10CrMo9-10.15NiCuMoNb5-6-4.X10CrMoVNb9-1 SMLS 2"-16" T3.91-17.48mm None /Custom-make
Pressure Application

Stainless steel pipe material avilalbe :

304/SUS304/UNS S30400/1.4301

304L/UNS S30403/1.4306;

304H/UNS S30409/1.4948;

309S/UNS S30908/1.4833

309H/UNS S30909;

310S/UNS S31008/1.4845;

310H/UNS S31009;

316/UNS S31600/1.4401;

316Ti/UNS S31635/1.4571;

316H/UNS S31609/1.4436;

316L/UNS S31603/1.4404;

316LN/UNS S31653;

317/UNS S31700;

317L/UNS S31703/1.4438;

321/UNS S32100/1.4541;

321H/UNS S32109;

347/UNS S34700/1.4550;

347H/UNS S34709/1.4912;

348/UNS S34800;

Alloy steel:

ASTM A234 WP5/WP9/WP11/WP12/WP22/WP91;

ASTM A860 WPHY42/WPHY52/WPHY60/WPHY65;

ASTM A420 WPL3/WPL6/WPL9;

Duplex steel

ASTM A182 F51/S31803/1.4462;

ASTM A182 F53/S2507/S32750/1.4401;

ASTM A182 F55/S32760/1.4501/Zeron 100;

2205/F60/S32205;

ASTM A182 F44/S31254/254SMO/1.4547;

17-4PH/S17400/1.4542/SUS630/AISI630;

F904L/NO8904/1.4539;

725LN/310MoLN/S31050/1.4466

253MA/S30815/1.4835;

Nickel alloy steel:

Alloy 200/Nickel 200/NO2200/2.4066/ASTM B366 WPN;

Alloy 201/Nickel 201/NO2201/2.4068/ASTM B366 WPNL;

Alloy 400/Monel 400/NO4400/NS111/2.4360/ASTM B366 WPNC;

Alloy K-500/Monel K-500/NO5500/2.475;

Alloy 600/Inconel 600/NO6600/NS333/2.4816;

Alloy 601/Inconel 601/NO6001/2.4851;

Alloy 625/Inconel 625/NO6625/NS336/2.4856;

Alloy 718/Inconel 718/NO7718/GH169/GH4169/2.4668;

Alloy 800/Incoloy 800/NO8800/1.4876;

Alloy 800H/Incoloy 800H/NO8810/1.4958;

Alloy 800HT/Incoloy 800HT/NO8811/1.4959;

Alloy 825/Incoloy 825/NO8825/2.4858/NS142;

Alloy 925/Incoloy 925/NO9925;

Hastelloy C/Alloy C/NO6003/2.4869/NS333;

Alloy C-276/Hastelloy C-276/N10276/2.4819;

Alloy C-4/Hastelloy C-4/NO6455/NS335/2.4610;

Alloy C-22/Hastelloy C-22/NO6022/2.4602;

Alloy C-2000/Hastelloy C-2000/NO6200/2.4675;

Alloy B/Hastelloy B/NS321/N10001;

Alloy B-2/Hastelloy B-2/N10665/NS322/2.4617;

Alloy B-3/Hastelloy B-3/N10675/2.4600;

Alloy X/Hastelloy X/NO6002/2.4665;

Alloy G-30/Hastelloy G-30/NO6030/2.4603;

Alloy X-750/Inconel X-750/NO7750/GH145/2.4669;

Alloy 20/Carpenter 20Cb3/NO8020/NS312/2.4660;

Alloy 31/NO8031/1.4562;

Alloy 901/NO9901/1.4898;

Incoloy 25-6Mo/NO8926/1.4529/Incoloy 926/Alloy 926;

Inconel 783/UNS R30783;

NAS 254NM/NO8367;

Monel 30C

Nimonic 80A/Nickel Alloy 80a/UNS N07080/NA20/2.4631/2.4952

Nimonic 263/NO7263

Nimonic 90/UNS NO7090;

Incoloy 907/GH907;

Nitronic 60/Alloy 218/UNS S21800


Seamless Pipe,Seamless Stainless Steel Pipe,Seamless Steel Pipe,Galvanized Steel Pipe

HeBei GuangHao Pipe Fittings Co .,LTD (Cangzhou Sailing Steel Pipe Co., Ltd) , https://www.guanghaofitting.com